I have a raster data set created from the pixel classification of a satellite image.The pixel have 4 possible values ,representing different land cover classes. Using ArcGIS 10.1, The display works fine in the image but attribute table gives incorrect values of pixel count. As it can be observed from fig. that vacant land is a dominating land cover class but its pixel is less than built-up area.I mean, how is it possible?? Any help would be appreciated.
Hello Shahnilla Rizvi,
Surely there is something strange in the pixel count. By the picture of the map you have posted lulc_class: vacant (71) sure is the dominating land cover class. Do you think you could upload this raster somewhere so we could cross-check it in our GIS software?
I have found a similar question with a walk-through for QGIS that maybe could be of any help to you: https://gis.stackexchange.com/questions/83407/how-to-extract-pixel-value-counts-from-a-raster-in-qgis
Maybe you are familiarized with it already, but there is also the raster analysis QGIS guidelines which i have used often times with fairly precise results: https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/rasteranalysis.html
I hope you find a nice and quick solution for your raster problem.
Best regards,
David
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