Changing Raster Layer Style
From AWF-Wiki
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The raster layer propertiers differ from the vector layer properties, due to the significant differences of the data. | The raster layer propertiers differ from the vector layer properties, due to the significant differences of the data. | ||
You can open this dialog by double-clicking a raster layer in the [[Table of contents | TOC]] or right-clicking on the layer in the [[Table of contents | TOC]] and choosing {{mitem|text=Properties}}. | You can open this dialog by double-clicking a raster layer in the [[Table of contents | TOC]] or right-clicking on the layer in the [[Table of contents | TOC]] and choosing {{mitem|text=Properties}}. | ||
| − | + | ==Render Type: Multiband color== | |
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| + | #* True color (RGB=3,2,1) simulates the natural color. | ||
| + | #* Standard false color (RGB=4,3,2) makes healthy vegetation generally appear red. | ||
| + | #* False color (RGB=5,4,3 or 4,5,3) tends to distinguish different landcover material. | ||
| + | # In the {{button|text=Layer stack}} pulldown-menu, select {{button|text=Yes}}. | ||
| + | # Click the bottom {{button|text=...}} button to select directory and file name to save the result. You can skip this step if you only want to save the result temporarily. | ||
| + | # Check the box {{button|text=Open output file after running algorithm}} (if not checked per default) and click {{button|text=Run}}. The resulting map should be added to the [[TOC]] automatically after the algorithm has finished, under the name ''Output layer''. | ||
| + | # If necessary, you can rearrange the bands by opening the layer [[Exercise 01: First steps in QGIS|properties]] and selecting the {{button|text=Style}} tab. Adjust the bands as you see fit and confirm with {{button|text=Apply}} or {{button|text=OK}} ('''figure B'''). | ||
| + | #* For some color composites, (e.g. true color composites), the image may be enhanced by selecting {{button|text=Stretch to MinMax}} from the {{button|text=Contrast enhancement}} menu and selecting the {{button|text=Mean +/- standard deviation x}} radio button. After adjusting the standard deviation factor (a value between 1 and 2 should do), click {{button|text=Load}} and confirm with {{button|text=Apply}} or {{button|text=OK}}. | ||
| − | + | [[Image:RemSens_Exercise03_2.png|thumb|center|450px|'''Figure B:''' The ''properties'' dialogue for a multiband raster layer in [[QGIS]] 2.0]] | |
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| + | ==Render Type: Singleband gray== | ||
| + | ==Render Type: Singleband pseudocolor== | ||
| + | ==Set Transperancy== | ||
[[category: Changing Raster Layer Symbology]] | [[category: Changing Raster Layer Symbology]] | ||
Revision as of 14:35, 16 September 2014
The raster layer propertiers differ from the vector layer properties, due to the significant differences of the data. You can open this dialog by double-clicking a raster layer in the TOC or right-clicking on the layer in the TOC and choosing Properties.
Contents |
Render Type: Multiband color
- True color (RGB=3,2,1) simulates the natural color.
- Standard false color (RGB=4,3,2) makes healthy vegetation generally appear red.
- False color (RGB=5,4,3 or 4,5,3) tends to distinguish different landcover material.
- In the Layer stack pulldown-menu, select Yes.
- Click the bottom ... button to select directory and file name to save the result. You can skip this step if you only want to save the result temporarily.
- Check the box Open output file after running algorithm (if not checked per default) and click Run. The resulting map should be added to the TOC automatically after the algorithm has finished, under the name Output layer.
- If necessary, you can rearrange the bands by opening the layer properties and selecting the Style tab. Adjust the bands as you see fit and confirm with Apply or OK (figure B).
- For some color composites, (e.g. true color composites), the image may be enhanced by selecting Stretch to MinMax from the Contrast enhancement menu and selecting the Mean +/- standard deviation x radio button. After adjusting the standard deviation factor (a value between 1 and 2 should do), click Load and confirm with Apply or OK.
