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1 | 1 | ---
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2 | 2 | layout: single
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| -title: "Subtract One Raster from Another and Export a New GeoTIFF in Python" |
| 3 | +title: "Subtract One Raster from Another and Export a New GeoTIFF in Open Source Python" |
4 | 4 | excerpt: "Often you need to process two raster datasets together to create a new raster output and then save that output as a new file. Learn how to subtract rasters and create a new GeoTIFF file using open source Python."
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5 | 5 | authors: ['Leah Wasser', 'Chris Holdgraf', 'Martha Morrissey']
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6 | 6 | dateCreated: 2018-02-05
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@@ -31,22 +31,15 @@ redirect_from:
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31 | 31 |
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32 | 32 | <div class='notice--success' markdown="1">
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33 | 33 |
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34 |
| -## <i class="fa fa-ship" aria-hidden="true"></i> Chapter Five - Raster Data Processing in Python |
| 34 | +## <i class="fa fa-ship" aria-hidden="true"></i> Subtract Raster Data in Open Source Python |
35 | 35 |
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36 |
| -In this chapter, you will learn how to process raster data, such as cropping and reprojecting rasters, using raster math to derive new rasters, and reclassifying rasters using a set of values. |
37 |
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38 |
| -## <i class="fa fa-graduation-cap" aria-hidden="true"></i> Learning Objectives |
39 |
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40 |
| -After completing this chapter, you will be able to: |
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| -* Use raster math in **Python** to derive new rasters, such as a Canopy Height Model (CHM). |
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| -* Reclassify a raster dataset in **Python** using a set of defined values. |
44 |
| -* Crop a raster dataset in **Python** using a vector extent object derived from a shapefile. |
45 |
| -* Reproject a raster using **rasterio**. |
| 36 | +After completing this tutorial, you will be able to: |
| 37 | +* Derive a **Canopy Height Model** in `Python` using a Digital Elevation Model and a Digital Surface Model derived from Lidar data. |
| 38 | +* Subtract one raster layer from another using raster math and open source Python. |
46 | 39 |
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47 | 40 | ## <i class="fa fa-check-square-o fa-2" aria-hidden="true"></i> What You Need
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48 | 41 |
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49 |
| -You will need a computer with internet access to complete this lesson. |
| 42 | +You will need a computer with internet access to complete this lesson and a working version of python version 3.x. |
50 | 43 |
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51 | 44 | {% include/data_subsets/course_earth_analytics/_data-colorado-flood.md %}
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52 | 45 |
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