<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@fda78c400c624dcb9eecfa55fba8fd07" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@9916d5c59eb444679e25d8deab7f711d">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@9916d5c59eb444679e25d8deab7f711d" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;">Satellite products, as a dataset, are just a lot of numbers — not the most intuitive format when you are deciding how to analyse the data. It is much more helpful to see what the data looks like. The <a class="reference external" href="https://maps.digitalearth.africa/" target="_blank">Digital Earth Africa Map</a> portal helps users visualise Digital Earth Africa products by offering an interactive map.</p>
</div>
</div>
<div class="vert vert-1" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@0101c541e3d14563b189adac38317bca">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@0101c541e3d14563b189adac38317bca" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;">In this section, we will show you how to navigate the <a class="reference external" href="https://maps.digitalearth.africa/" target="_blank">Digital Earth Africa Map</a><span>. This includes finding the longitude and latitude coordinates of a location. We will then walk through a short exercise on displaying Landsat 8 data on the Map.</span></p>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@232378ba81944efda498a8460d0215eb" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@74d964c3800d4d689ff06212cb8b8148">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@74d964c3800d4d689ff06212cb8b8148" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;">This video will show you the basics of the Digital Earth Africa Map portal. In the video, a derived product (called ‘Water Observations from Space’) is loaded.</p>
<p style="text-align: left;">Watch the video to see the product loading process.</p>
</div>
</div>
<div class="vert vert-1" data-id="block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="video" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Video: Introduction to the DE Africa Map</h3>
<div
id="video_341bec96f01f4618b7d4e22ced5079dd"
class="video closed"
data-metadata='{"autoAdvance": false, "autohideHtml5": false, "autoplay": false, "captionDataDir": null, "completionEnabled": false, "completionPercentage": 0.95, "duration": null, "end": 0.0, "generalSpeed": 1.0, "lmsRootURL": "https://learn.digitalearthafrica.org", "poster": null, "prioritizeHls": false, "publishCompletionUrl": "/courses/course-v1:digitalearthafrica+DEA101+2021/xblock/block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd/handler/publish_completion", "recordedYoutubeIsAvailable": true, "savedVideoPosition": 0.0, "saveStateEnabled": false, "saveStateUrl": "/courses/course-v1:digitalearthafrica+DEA101+2021/xblock/block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd/handler/xmodule_handler/save_user_state", "showCaptions": "true", "sources": [], "speed": null, "start": 0.0, "streams": "1.00:44mEA6GjugE", "transcriptAvailableTranslationsUrl": "/courses/course-v1:digitalearthafrica+DEA101+2021/xblock/block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd/handler/transcript/available_translations", "transcriptLanguage": "en", "transcriptLanguages": {"en": "English"}, "transcriptTranslationUrl": "/courses/course-v1:digitalearthafrica+DEA101+2021/xblock/block-v1:digitalearthafrica+DEA101+2021+type@video+block@341bec96f01f4618b7d4e22ced5079dd/handler/transcript/translation/__lang__", "ytApiUrl": "https://www.youtube.com/iframe_api", "ytMetadataEndpoint": "", "ytTestTimeout": 1500}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="341bec96f01f4618b7d4e22ced5079dd"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
</div>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@69f6af730e934835bce62c789d0d9505" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@633be55a22bb447693e035cd0375236e">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@633be55a22bb447693e035cd0375236e" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">To access the Map, open <a class="reference external" href="https://maps.digitalearth.africa/" target="_blank" style="box-sizing: border-box; color: #2980b9; text-decoration-line: none; cursor: pointer;">https://maps.digitalearth.africa/</a>. This will bring you to the Digital Earth Africa Map user interface.</span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;"><img alt="The DE Africa Map user interface." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_ui1.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 600px;" /></span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">The Digital Earth Africa Map can be split into two sections. The exercise below will cover how to use both.</span></p>
<ul style="text-align: left;">
<ul>
<ul>
<li style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;"><strong style="font-size: 1em;">Data workbench (left side):</strong><span style="font-size: 1em;"> Allows users to select data they want to view on the Map. By default, no data is selected.</span></span></li>
<li style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;"><strong style="font-size: 1em;">Map interface (right side):</strong><span style="font-size: 1em;"> Displays the data selected in the workbench, and allows users to customise how the data is viewed. By default, it shows an Esri World Imagery Basemap.</span></span></li>
</ul>
</ul>
</ul>
</div>
</div>
<div class="vert vert-1" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@8e8ef284322e402e85bbb75cff3fe94a">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@8e8ef284322e402e85bbb75cff3fe94a" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">Click anywhere on the map interface to display the longitude and latitude of the selected point.</span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;"><img alt="Finding longitude and latitude of a point." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_lonlat.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 600px;" /></span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">The selected point is shown by a blue location marker.</span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">Zoom in to the shaded area by scrolling up on your mouse or pressing the floating <strong style="box-sizing: border-box;">+</strong> button on the side of the map interface. Left-click and drag to pan the map.</span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">The latitude and longitude coordinates are shown in the <strong>Feature Information</strong> window. You can highlight and copy them with your mouse.</span></p>
<p style="text-align: left;"><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">This function is useful when you want to perform analysis on a certain area, and need to input the longitude and latitude to load the data. We do not need coordinates for the next exercise.</span></p>
<div class="admonition note" style="box-sizing: border-box; -webkit-font-smoothing: antialiased; padding: 12px; line-height: 24px; margin-bottom: 24px; background: #e7f2fa;">
<p class="admonition-title" style="box-sizing: border-box; line-height: 1; margin: -12px -12px 12px; font-size: inherit; font-variant-numeric: normal; font-variant-east-asian: normal; font-weight: bold; font-stretch: normal; text-rendering: auto; -webkit-font-smoothing: antialiased; color: #ffffff; background: #6ab0de; padding: 6px 12px;">Note</p>
The coordinates from Digital Earth Africa Maps are given in terms of degrees in the cardinal directions (North, East, South, West). Latitude coordinates may be North (N) or South (S). Longitude coordinates may be East (E) or West (W). If copying these values for use in the Sandbox, you must add a negative (-) sign to the latitude value if it is given as South, and you must add a negative (-) sign to the longitude value if it is given as West.</div>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@f1839713b5114adbb49f3afeca81a980" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@63d123616d3c4c68b794923b52b2b37b">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@63d123616d3c4c68b794923b52b2b37b" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;">This activity will demonstrate how to load Landsat 8 imagery onto the Digital Earth Africa Map. Follow the instructions below to open the dataset in the workbench and view it in the map interface.</p>
<div class="admonition note" style="box-sizing: border-box; -webkit-font-smoothing: antialiased; padding: 12px; line-height: 24px; margin-bottom: 24px; background: #e7f2fa; color: #000000; text-align: left;">
<p class="admonition-title" style="box-sizing: border-box; line-height: 1; margin: -12px -12px 12px; font-size: inherit; font-family: inherit; font-variant-numeric: normal; font-variant-east-asian: normal; font-weight: bold; font-stretch: normal; text-rendering: auto; -webkit-font-smoothing: antialiased; color: #ffffff; background: #6ab0de; padding: 6px 12px; text-align: left;">Note</p>
The video earlier in this section shows how to load Water Observations from Space, however this exercise will use the Landsat 8 dataset.</div>
<ol style="text-align: left;">
<li style="box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left;">First, we need to select the Landsat 8 dataset. To add data to the data workbench, click <strong style="box-sizing: border-box; text-align: left;">Add Data</strong> to open the Data Catalogue.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; font-family: Arial, sans-serif; color: #000000; text-align: left;"><img alt="The DE Africa Map data workbench." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_workbench1.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 400px;" /></p>
<ol class="arabic" start="2" style="text-align: left;">
<li style="text-align: left; box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px;">The datasets are organised by category. Landsat 8 is a satellite product, so select <strong style="box-sizing: border-box;">Satellite images</strong>. Click <strong style="box-sizing: border-box;">Surface reflectance</strong> and <strong style="box-sizing: border-box;">Daily surface reflectance</strong> to open the folder of Landsat surface reflectance products. Click <strong style="box-sizing: border-box;">Surface reflectance (Landsat 8)</strong>.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px; text-align: left;">The right panel will show information on the selected dataset. Click <strong style="box-sizing: border-box;">Add to the map</strong>. This will add the dataset to the workbench and close the Data Catalogue.</p>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; font-family: Arial, sans-serif; color: #000000; text-align: left;"><img alt="The DE Africa Map data catalogue." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_datacatalogue_l8_boxed.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 400px;" /></p>
<ol class="arabic simple" start="3" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 24px; padding-left: 0px; list-style-position: initial; list-style-image: initial; line-height: 24px; color: #000000; text-align: left;">
<li style="text-align: left; box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">The Landsat 8 data will be displayed in the map interface as blue shaded areas. By default, the data shows the latest available timestep. In this example, this is 25 January 2020.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; font-family: Arial, sans-serif; color: #000000; text-align: left;"><img alt="Shaded areas show where data exists." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_shaded.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 400px;" /></p>
<ol class="arabic simple" start="4" style="text-align: left;">
<li style="box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Zoom in to the shaded area by scrolling up on your mouse or pressing the floating <strong style="box-sizing: border-box;">+</strong> button on the side of the map interface. Left-click and drag to pan the map.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; font-family: Arial, sans-serif; color: #000000; text-align: left;"><img alt="DE Africa map zoom." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_float_boxed.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 400px;" /></p>
<ol class="arabic simple" start="5" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 24px; padding-left: 0px; list-style-position: initial; list-style-image: initial; line-height: 24px; color: #000000; text-align: left;">
<li style="text-align: left; box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Zooming in on the shaded area will show the Landsat 8 data rendered as true-colour imagery. This is only one day of data, so not all of Africa is covered in the satellite flyover. Only the area inside the rectangle is Landsat 8 imagery.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; font-family: Arial, sans-serif; color: #000000; text-align: left;"><img alt="Data area as true-colour." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_zoomed.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 300px;" /></p>
<ol class="arabic simple" start="6" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 24px; padding-left: 0px; list-style-position: initial; list-style-image: initial; line-height: 24px; color: #000000; text-align: left;">
<li style="text-align: left; box-sizing: border-box; list-style: decimal; margin-left: 24px;">
<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">To see other days of data, click the date shown in the workbench dataset <strong style="box-sizing: border-box;">Time</strong> bar. This will open a menu that shows all available timesteps for the Landsat 8 product. Select a different time and see how the map shaded area changes.</p>
</li>
</ol>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; color: #000000; text-align: left;"><img alt="Workbench time selection menu." class="no-scaled-link" src="https://learn.digitalearthafrica.org/asset-v1:digitalearthafrica+DEA101+2021+type@asset+block@maps_time.PNG" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 300px;" /></p>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; text-align: left;">Congratulations — you have used the Digital Earth Africa Map to view Landsat 8 data.</p>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@07d977ef7de740deaa9d7ece9c09ab88" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@1951c6b397804f1bbf953f064b5f8d00">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@1951c6b397804f1bbf953f064b5f8d00" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;">Now you have successfully loaded Landsat 8 imagery on the Digital Earth Africa Map, try loading imagery for Sentinel-2.</p>
<p style="text-align: left;"><strong>Hints:</strong></p>
<ul>
<li><span style="color: #000000;">The Sentinel-2 product is also a surface reflectance dataset</span></li>
<li><span style="color: #000000;">You can have multiple datasets in the workbench</span></li>
</ul>
<p style="text-align: left;"><strong style="box-sizing: border-box;">Other useful functions:</strong></p>
<ul>
<li><span style="color: #000000;">Click on the white square to deselect a dataset. This will keep it in the workbench but remove it from the map interface display</span></li>
<li><span style="color: #000000;">Click on </span><strong style="color: #000000;">Remove</strong><span style="color: #000000;"> to remove the selected dataset</span></li>
<li><span style="color: #000000;">Click on </span><strong style="color: #000000;">Remove All</strong><span style="color: #000000;"> to clear all datasets from the workbench</span></li>
</ul>
<p style="text-align: left;">Details on other functions of the Digital Earth Africa Map can be found in the <a class="reference internal" href="https://learn.digitalearthafrica.org/courses/course-v1:digitalearthafrica+DEA101+2021/wiki/digitalearthafrica.DEA101.2021/map-portal-user-guide/" style="box-sizing: border-box; color: #2980b9; text-decoration-line: none; cursor: pointer;" target="_blank">Map portal user guide</a>, but are not necessary to progress in the training course.</p>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="VerticalStudentView" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="vertical" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@vertical+block@6890d861fa214a95bdbd2bb04674eb57" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@c2af32514fdb4599b8075e36fd774a22">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-init="XBlockToXModuleShim" data-runtime-class="LmsRuntime" data-runtime-version="1" data-block-type="html" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@html+block@c2af32514fdb4599b8075e36fd774a22" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p style="text-align: left;"><span style="color: #000000;">Using the </span><a class="reference external" href="https://maps.digitalearth.africa/" target="_blank" style="box-sizing: border-box; color: #2980b9; text-decoration-line: none; cursor: pointer;">Digital Earth Africa Map</a><span style="color: #000000;">, we can see the satellite data in a visual way. This makes it easier to understand the scope of the data we are analysing. It is also a useful tool for pinpointing longitude and latitude coordinates of areas of interest.</span></p>
</div>
</div>
<div class="vert vert-1" data-id="block-v1:digitalearthafrica+DEA101+2021+type@problem+block@87ee28c840314ce797d40f2e8dfd847f">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:digitalearthafrica+DEA101+2021" data-block-type="problem" data-usage-id="block-v1:digitalearthafrica+DEA101+2021+type@problem+block@87ee28c840314ce797d40f2e8dfd847f" data-request-token="5922f77c881411efa85e837f534d2eba" data-graded="True" data-has-score="True">
<div class="page-banner"><div class="alert alert-warning"><span class="icon icon-alert fa fa fa-warning" aria-hidden="true"></span><div class="message-content">Knowledge Check: Digital Earth Africa Map is only accessible to enrolled learners. Sign in or register, and enroll in this course to view it.</div></div></div>
</div>
</div>
</div>
<script type="text/javascript">
(function (require) {
require(['/static/js/dateutil_factory.be68acdff619.js?raw'], function () {
require(['js/dateutil_factory'], function (DateUtilFactory) {
DateUtilFactory.transform('.localized-datetime');
});
});
}).call(this, require || RequireJS.require);
</script>
<script>
function emit_event(message) {
parent.postMessage(message, '*');
}
</script>
</div>