Adds a few colab links for sandbox notebooks (#383)

* fix broken notebooks, add colab

* typo in url

* explicit colab notebook magic command instructions

* remove dangling cell

* gpd read_file to from_features

* clarify credentials portion

* generalize magic command comment

* general colab magic command

Author: matthew-ballard

.gitignore

@@ -95,3 +95,5 @@ gdalwmscache
 
 # IDE environments
 .idea/*
+
+jupyter-notebooks/workflows/planet_sandbox_data/forest-carbon-dilligence/fcd_statistics.csv

jupyter-notebooks/workflows/planet_sandbox_data/README.md

@@ -1,39 +1,11 @@
-## Planet Sandbox  data 
+## Planet Sandbox Data
 
-Planet Sandbox Data offers a substantial amount of <a href="https://planet.com/" target="_blank">Planet</a> data samples made available under a <a href="https://creativecommons.org/licenses/by-nc/4.0/">CC-BY-NC license</a> to all active Planet and <a href="https://www.sentinel-hub.com/" target="_blank">Sentinel Hub</a> users to test and experience Planet Data. Sandbox Data offers a subset of the <a href="https://worldstrat.github.io/" target="_blank">WorldStrat</a> locations and dense time-stacks, ranging from 25 to 200 km<sup>2</sup> in size. The locations are spread across the world, assuring a stratified representation of various use cases. 
-
-<a href="https://docs.planet.com/data/planet-sandbox-data/" target="_blank">Planet Sandbox Data landing page</a> provides an overview documentation of each of the collections including the temporal and geographic coverage. Users can also log in to <a href="https://apps.sentinel-hub.com/eo-browser/?zoom=12&lat=42.13668&lng=11.76636&themeId=PLANET_SANDBOX&tutorialIdToShow=PSD_TUTORIAL#highlights" target="_blank">EO Browser</a> to easily browse and visualize the Sandbox Data.  
+Planet Sandbox Data offers a substantial amount of [Planet](https://planet.com/) data samples made available under a [CC-BY-NC license](https://creativecommons.org/licenses/by-nc/4.0/) to users to test Planet Data. Sandbox Data offers a subset of the [WorldStrat](https://worldstrat.github.io/) locations and dense time-stacks, ranging from 25 to 200 km² in size. The locations are spread across the world, assuring a stratified representation of various use cases.
 
+[Planet Sandbox Data landing page](https://docs.planet.com/data/planet-sandbox-data/) provides an overview documentation of each of the collections including the temporal and geographic coverage. Users can also log in to [the Browser application](https://insights.planet.com/analyze/browser/?tutorialIdToShow=PSD_TUTORIAL) to easily browse and visualize Planet Sandbox Data.  
 
 ### Planet Sandbox Data Example Notebooks
+
 The tutorial Notebooks in this directory provide examples on how to use Planet APIs to access the Sandbox Data and perform various workflows such as change anaylsis, time series analysis, and more.
 
-<div style="width: 75%; padding: 15px; border: 2px solid #007980; border-radius: 5px; background-color: transparent; margin-left: 0;">
-  <div style="display: flex; justify-content: space-between; align-items: center;">
-    <div style="display: flex; align-items: center; flex: 0 0 50%; padding-right: 20px;">
-      <svg style="margin-right: 10px; fill: #007980; width: 64px; height: 64px;" viewBox="0 0 24 24">
-        <path d="M11,9H13V7H11M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20, 12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10, 10 0 0,0 12,2M11,17H13V11H11V17Z"></path>
-      </svg>
-      <p style="font-size: 16px; margin: 0; line-height: 1.5;">
-        These notebooks make use of <a href="https://docs.planet.com/data/planet-sandbox-data/" target="_blank">Planet Sandbox Data</a>. You need a Planet account in order to access this data. If you don't already have an account, you can <a href="https://insights.planet.com/sign-up/" target="_blank">create a free 30 day trial</a>.
-      </p>
-    </div>
-    <div style="flex: 0 0 50%; display: flex; justify-content: center; align-items: center;">
-      <a href="https://insights.planet.com/sign-up/" target="_blank" style="
-        display: inline-block;
-        padding: 10px 20px;
-        font-size: 16px;
-        font-weight: bold;
-        color: #fff;
-        background-color: #007980;
-        border-radius: 5px;
-        text-decoration: none;
-        white-space: nowrap;
-        transition: background-color 0.3s ease;
-        margin: 0 auto;
-      " onmouseover="this.style.backgroundColor='#005960'" onmouseout="this.style.backgroundColor='#007980'">
-        Start Free Trial
-      </a>
-    </div>
-  </div>
-</div>
+> **Note:** These notebooks make use of [Planet Sandbox Data](https://docs.planet.com/data/planet-sandbox-data/). You need a Planet account in order to access this data. If you don't already have an account, you can [create a free 30 day trial](https://insights.planet.com/sign-up/).