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In QGIS 1.8 I have two rasters derived from the same multi-band tif image

  1. ndvi - each pixel contains NDVI values. Using /Plugin/Analysis Point Sampling tool a new vector layer is created and the NDVI values of selected pixels are saved in the attribute table of this new layer. All is OK here.
  2. geo a georeferenced raster of the same multi-band photo

How do I get the coordinates of the same pixels from raster (2) geo?

I would like to store them into the same attribute table where the NDVI values are.

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1 Answers1

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How to get Shapefile point coordinates into .xls?

Following the directions in the above post, merely @vector layer containing the (NDVI, these may be different) values of the selected pixels go to

Vector>Geometry Tools>Export/Add Geometry columns enter the vector layer containing, the attribute table where the coordinates are to be added. click OK. This attribute table reads two new columns now, e.g.

wkt_geom riba-ndvi- XCOORD YCOORD

POINT(8378.111080 -1838.011980) 0.25517 8378.11108 -1838.01198

POINT(8378.111080 -1758.011980) 0.30189 8378.11108 -1758.01198

POINT(3178.111080 -5558.011980) 0.19718 3178.11108 -5558.01198

some further clarification is required How do XCOORD YCOORD relate to lati/long? When the original multi-band raster is georeferenced 4 pixels are selected from the canvas and the coordinates are selected from the multi-band *.tif raster. All thety look like

X=25.6341644 Y=42.2355833

These are real coordinates showing the exact location of the object.

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