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<p style="text-align: left;">Dans la session 3, vous avez chargé les données Sentinel-2 dans la Sandbox à l'aide de <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">load_ard()</span></code>. applique un masque de nuage à chaque pas de temps de l'ensemble de données. La deuxième partie de l'exercice a utilisé le même ensemble de données pour calculer et afficher une géomédiane sans nuages, en utilisant <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">xr_geomedian()</span></code> et <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">rgb()</span></code><span style="color: #000000; font-family: Arial, sans-serif;">.</span></p>
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<h3 style="text-align: left;">Complétez le quiz</h3>
<p style="text-align: left;">Cette section contient le quiz de session. Tous les quiz, sondages et tests de connaissances comptent pour votre progression pour un certificat de cours.</p>
<h3>Vérifiez votre notebook</h3>
<p style="text-align: left;">Le quiz vous demandera d'utiliser le notebook que vous avez développé pour l'exercice de cette session sur le chargement des données. Si vous souhaitez confirmer que votre notebook fonctionne comme prévu, vous pouvez le comparer à l'exemple de notebook de solution.</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-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>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px; text-align: left;">L'exemple de notebook de solutions ne contient pas la réponse au quiz. Utilisez-le pour vérifier que vous avez bien fait l'exercice, puis utilisez votre notebook pour répondre au quiz. L'accès au notebook de solution n'affectera pas votre progression vers le certificat.</p>
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<p></p>
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<p style="text-align: left;">Vous pouvez utiliser le notebook que vous avez développé dans le cadre de cette session. Dans ce quiz, nous allons charger deux ensembles de données à comparer. Donnez à chaque ensemble de données un nom différent, par ex.. <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">ds_1</span></code>, <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">ds_2</span></code>.</p>
<p class="MsoBodyText" style="margin: 9pt 0cm; text-align: left;"><span style="mso-bidi-font-family: Arial;"><strong> jeu de données 1:</strong><br /> Dans une nouvelle cellule, écrivez une nouvelle commande <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">load_ard()</span></code> pour charger les données pour Sentinel-2, sur les limites de latitude (y) (-19.01, -19.05) et de longitude (x) (30.27, 30.31) et les pas de temps ( '2017-11-01', '2018-01-31'). Conservez tous les autres paramètres comme dans le didacticiel.</span></p>
<p class="MsoBodyText" style="margin: 9pt 0cm; text-align: left;"><span style="mso-bidi-font-family: Arial;"><em>Remarque : le chargement des données peut prendre environ 5 minutes.</em><br /> <br /> <strong>jeu de données 2:</strong><br /> Dans la nouvelle cellule suivante, écrivez une nouvelle commande </span><span style="mso-bidi-font-family: Arial;"><span style="mso-bidi-font-family: Arial;"><code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">load_ard()</span></code></span>pour charger les données pour Sentinel-2, sur les mêmes latitude et longitude que l'ensemble de données 1. Pour l'ensemble de données 2, utilisez le pas de temps ('2019-06-01', '2019 -08-31'). Conservez tous les autres paramètres comme dans le didacticiel.<br /><br /></span></p>
<p class="MsoBodyText" style="margin: 9pt 0cm; text-align: left;"><span style="mso-bidi-font-family: Arial;"><em>Remarque : le chargement des données peut prendre environ 5 minutes.</em><br /> <br /> Astuce : assurez-vous d'inclure les autres paramètres de l'exercice de la session 3, tels que <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">min_gooddata</span></code>, <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">group_by</span></code>, <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">resolution</span></code>, et <code class="docutils literal notranslate" style="box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', Courier, monospace; font-size: 12px; white-space: nowrap; max-width: 100%; background-image: initial; background-color: #ffffff; border: 1px solid #e1e4e5; padding: 2px 5px; color: #e74c3c; overflow-x: auto;"><span class="pre" style="box-sizing: border-box;">output_crs</span></code>. <o:p></o:p></span></p>
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<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>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px; text-align: left;">Nous vous encourageons fortement à essayer l'exercice plus tôt dans la session avant de télécharger la solution ci-dessous. Cela vous aidera à apprendre à utiliser la Sandbox indépendamment pour vos propres analyses.</p>
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<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px;"><a class="reference external" href="/assets/courseware/v1/de8f648ead8ee25639ae629ac0273f6f/asset-v1:digitalearthafrica+DEA101-fr+2021+type@asset+block/Geomedian_composite_solution.ipynb" style="text-align: left; box-sizing: border-box; color: #2980b9; text-decoration-line: none; cursor: pointer;" target="[object Object]">Téléchargez le notebook de solutions pour l'exercice de la session 2</a></p>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; text-align: left;">Pour afficher ce notebook sur la Sandbox, vous devez d'abord le télécharger sur votre ordinateur, puis le télécharger dans la Sandbox. Suivez ces instructions :</p>
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<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Téléchargez le notebook en cliquant sur le lien ci-dessus.</p>
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<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Dans la Sandbox, ouvrez le dossier <strong style="box-sizing: border-box;">Training</strong> .</p>
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<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Cliquez sur le bouton <strong>Télécharger des fichiers</strong> comme indiqué ci-dessous.</p>
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<p style="box-sizing: border-box; line-height: 24px; margin: 0px 0px 24px; font-size: 16px; text-align: left;"><img alt="Upload button." class="no-scaled-link" src="https://training.digitalearthafrica.org/en/latest/_images/05_solution_uploadbutton.png" style="box-sizing: border-box; border: 0px; vertical-align: middle; width: 400px;" /></p>
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<p style="box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px; text-align: left;">Sélectionnez le notebook téléchargé à l'aide du navigateur de fichiers. Cliquez sur <strong style="box-sizing: border-box;">OK</strong>.</p>
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<p style="text-align: left; box-sizing: border-box; line-height: 24px; margin: 0px; font-size: 16px;">Le notebook de solution apparaîtra dans le dossier <strong style="box-sizing: border-box;">Training</strong> . Double-cliquez pour l'ouvrir.</p>
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