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Calculate multiple bands average raster in QGIS with high number of bands
I am a new user of raster layers in QGIS. I need to generate a new raster file with the average value for each pixel, from a raster file with 600 bands. The average has to be calculated from all the...
View ArticleSubtracting a glacier thickness raster layer from a DEM layer
I have two raster layers:One contains multiple polygons showing the thickness of glaciers, and theSecond one being a DEM layer of the area (including the glaciers).I am trying to subtract the thickness...
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Calculate percentile value of raster
I want to set null all raster values that fall below the 75th percentile value. E.g. If you classify the raster by quantile method into 4 classes I want to be left with the top 25% percentile. For the...
View ArticleFilling NoData values in raster with another raster's values in ArcGIS Pro...
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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QGIS graphical modeler and raster calculator
I'm making a graphical modeler that creates me a kind of DSM, like that:I create a DEM for my extent (I have the DEM for my whole country).I have the Lidar for the height of the forest and I extract it...
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Terracing and data format issues when converting DEM from float32 to UInt16
I have spent quite a bit of time trying to figure this issue out; I was hoping someone on here could give some advice on what to do. I am having issues with terracing on my 3D model in Blender and I...
View ArticleUsing Raster calculator gives ERROR 000539
I'm new with ArcGIS. I would like to do a calculate of NDWI. So I'm using Arctoolbox => Spatial analyst tools => Map Algebra => Raster calculator.But when I'm trying to perform it, I get this...
View ArticleCalculate the mean of files generated from gdal.Translate
I created several velocity maps from .nc files through gdal.Translate. Each .nc file is organized in several bands, I am only interested in 1: velocities. gdal.Translate allows me to select only the...
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ENVI band math incorrect values
I'm attempting to calculate vegetation indices in ENVI 5.2 using level-2 AVIRIS data in band math.The indices I'm working with are Vogelmann Red Edge 2, normalized difference red edge, and red edge...
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Using Raster Calculator Con(isnull) with ArcMap
I am using ArcMap 10.4.1 and the Raster Calculator to subtract polygons of clouds, land etc from my DEM. I use the statement:con(isnull, Cloud, DEM) and set the processing extent to environments of...
View ArticleRaster Caclulator issue for Multi Band Raster File in QGIS
I am using raster calculator in QGIS to filter out the rangeland area of ESA LULC raster file for region of Interest.The raster file has three bands (RGB)Earlier, I performed the task in ArcGIS and got...
View ArticleRaster Calculator issue for Multi Band Raster File in QGIS
I am using raster calculator in QGIS to filter out the rangeland area of ESA LULC raster file for region of Interest.The raster file has three bands (RGB)Earlier, I performed the task in ArcGIS and got...
View ArticleRaster Subtraction with QgsRasterCalculator in PyQGIS
I'm trying to do a simple subtraction of 2 raster layers using QgsRasterCalculator in PyQGIS. I've searched around and thought I nailed it but the code below didn't yield anything, but there wasn't...
View ArticleAdding Raster Layers without losing non-overlaying Raster Values
I have a question relating to the Raster Calculator.I have four individual Raster layer, which have Raster Values in different regions. I want to figure out the mean-Raster-Value of the Raster values...
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Calculating Population-Weighted Exposure level using QGIS
I am trying to calculate population-weighted exposure level (PWEL) of particulate matter. I have raster layer of both particulate matter and population. The equation to calculate PWEL is:Pi is...
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Conditional function when using GDAL Raster Calculator within QGIS Graphical...
I want to create a Pre-Calculated Value in GDAL Raster Calculator within Graphical Modeller. The function is to convert values below the threshold to become 0, while the other values are remains. The...
View ArticleIterate raster calculator operation over a pair of previous raster outputs
I am trying to create a ModelBuilder model that has to iterate a raster calculator operation over a pair of raster. I have 2 series of rasters for different sub-locations, like...
View ArticleTesting if two different rasters have overlapping data (not extents) before...
I am writing a toolbox script that will generate a difference surface using the raster calculator in ArcMap by subtracting a raster of interest from many other existing rasters, then outputting the...
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Union three rasters using raster calculator of ArcGIS Pro
I want to combine 3 rasters (land use, water bodies and airports) into on raster with only two values 0 and 1 where the places of land use, wetlands and airports are = 0, otherwise = 1I used raster...
View ArticleFind Red Pixels on a Georeferenced .png (Raster) and Convert To Polygon
I have a .png which has been georeferenced.There are rectangles on the png that are a particular shade of red.I would like to convert the raster data (.png) to polygons so that I can find the...
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