ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Support expressions for band arguments

Browse Source
This commit is contained in:
Tim Schaub
2021-12-03 17:23:55 -07:00
parent 4ed1226411
commit f5803ad6ca
9 changed files with 254 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
examples/cog-stretch.html Normal file
View File

@@ -0,0 +1,44 @@
---
layout: example.html
title: Band Constrast Stretch
shortdesc: Choosing bands and applying constrast stretch
docs: >
This example uses the `layer.updateStyleVariables()` method to update the rendering
of a GeoTIFF based on user selected bands and contrast stretch parameters.
tags: "cog, webgl, style"
---
<div id="map" class="map"></div>
<div class="controls">
<label for="red">Red channel</label>
<select id="red">
<option value="1" selected>visible red</option>
<option value="2">visible green</option>
<option value="3">visible blue</option>
<option value="4">near infrared</option>
</select>
<label>max
<input type="range" id="redMax" value="3000" min="2000" max="5000">
</label>
<label for="green">Green channel</label>
<select id="green">
<option value="1">visible red</option>
<option value="2" selected>visible green</option>
<option value="3">visible blue</option>
<option value="4">near infrared</option>
</select>
<label>max
<input type="range" id="greenMax" value="3000" min="2000" max="5000">
</label>
<label for="blue">Blue channel</label>
<select id="blue">
<option value="1">visible red</option>
<option value="2">visible green</option>
<option value="3" selected>visible blue</option>
<option value="4">near infrared</option>
</select>
<label>max
<input type="range" id="blueMax" value="3000" min="2000" max="5000">
</label>
</div>