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"NoData" is a term for null values in raster datasets.
274 questions
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Remove NoData from SRTM exported from GEE
I use the following code to export an elevation raster with Google Earth Engine:
var countries = ee.FeatureCollection("FAO/GAUL/2015/level0");
var oman = countries.filter(ee.Filter.eq('...
- 145
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In QGIS, when I clip a raster layer in a specific region, I could get the right output. In other areas output is blank
I use QGIS 3.40.6. I have a large ERDAS-IMAGINE file consisting of .img, .ige, .rrd, .rde files. QGIS can load them and show me the DEM value which looks correct. However, I would like to use a small ...
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Uploaded data in QGIS Cloud is not displayed
I want to publish data with a free QGIS Cloud account.
The Data: 2 Multipoint GeoPackages and 5 Multipolygon GeoPackages. I can log in and load the layers and also publish the map but when I click the ...
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What value for nodata I should set in gdal_translate to get correct file in PCRaster?
I prepare files for PCRaster Python in GDAL. My command is:
gdal_translate -of PCRaster -ot Int32 -b 1 -mo VS_NOMINAL file.tif file.map
So I don't set up nodata explicitly. It results in a file that ...
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151
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Problem extracting values from raster in R with terra package
Perhaps I misunderstand how to use terra::extract but I'm finding the function always returns NaN instead of the correct NODATA value for the first layer of a multi-layer SpatRaster object. The ...
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Rendering no data elevation values for 3D map in QGIS
I am trying to render a map in 3D using QGIS' 3D map view.
The view I am rendering contains a great amount of water, and the data source represents it as no data. This is a problem because it means ...
- 153
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82
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Crop arbitrary areas of GeoTIFF raster file
I have ~100 raster map GeoTIFF files with unimportant data around their edges and some (mostly rectangular) insets, which I would like to crop from the files before applying further processing. I am ...
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Fillnodata with minimum height of surrounding pixels
I have a heightmap where water features such as lakes are nodata. The water level of these water features is unknown. I want to assume that the lowest surrounding value is of a shore and a good ...
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43
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Segmentation problem
I have a segmentation problem with OTB implemented in QGIS 3.36. Indeed, I corrected the Landsat 8 image on ArcGIS and used pansharpening to improve the resolution. Then, I created a composite image ...
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138
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Filling NoData values in raster with another raster's values in ArcGIS Pro using con(isnull())
I am currently working with two rasters in ArcGIS Pro: a masked raster (cloud_masked) where clouds and shadows have been removed, resulting in NoData values (holes), and an unmasked stacking raster (...
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ArcGIS classification and accuracy assessment NoData class and error generating accuracy points
I'm trying to classify a clipped Landsat raster and then do an accuracy check for a watershed. When I do classify my clipped watershed, the region outside the ROI also gets classified i.e. the NoData ...
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137
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Nodata value error when uploading .tif files into Google Earth Engine
I am working with some data that somebody else prepared. The data consists of DEM .tif files that have been remapped to different values. When I attempt to upload these files to Google Earth Engine ...
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70
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Rasterizing a Boolean vectorial file
When I try to rasterize a Boolean vector file in QGIS I just get the ones values, what can I do to get both values (0,1)? There is no "nodata" values in the file.
- 153
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97
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Transfer NoData value with MosaicToNewRaster in arcpy
I am trying to create a mosaic dataset that keeps the properties of the original rasters. However, when I try to use arcpy's MosaicToNewRaster, the nodata type of -999999.0 is not carried over. I ...
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Why the difference between tools executed from ArcGIS toolbox and tools executed from Python?
While using the Copy Raster tool from data management toolbox, I get the following different behaviors when using it from ArcGIS PRO and when using it as Python script. The script behind the two ...
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