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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...
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Raster Calculator tool change in QGIS
I installed the PCRAster toolbox in QGIS but afterwards the Raster calculator tool in raster analysis is not working as it should. the icon changed likei am showing below:and when I open the tool it...
View ArticleHow to calculate and display a range of precipitation values using raster...
I am trying to use raster calculator to extract values from a GeoTIFF file showing rainfall. I would like to generate a raster with the range of 90-110 mm only see expression ("wc2.1_30s_bio_17@1"...
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QGIS: extracting desired range values from a raster and removing other values
In QGIS, I've successfully extracted a rainfall range from GeoTIFF file using raster calculator and the range displays. However, the extraction is still showing values below the minimum value of 90mm....
View ArticleCalculate with certain raster value of raster band in raster calculator
I try to calculate the critical channel slope (J) for each pixel of a channel raster layer by use of the raster calculator in QGIS. The formula is J=(A/(1+(B/"CatchmentArea")^(C)))+D and A,B,C,D are...
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...
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Mapping the standard deviation of values within a given proximity to a location
I have scattered point data with a single attribute. How can I assign to a reference raster pixel, the mean and standard deviation of all points within radius r of that pixel?I could buffer a point...
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How to sum assigned scores of multiple rasters into an output raster in...
I'm using ArcGIS Pro. I have multiple rasters, each representing a water quality characteristic. I assigned a score for each characteristic. A couple rasters have different scores. I want to overlay...
View ArticleFinding min elevation in ArcMap for area of interest
How do I find the minimum elevation in ArcMap for an area of interest?I want to find the right pour point to create a water shed in an area where I have almost no contour lines.
View ArticleLiDAR DTM slope slope analysis with a twist. Calculate elevation changes of...
I have raster DTM image of lidar data, mapped to Washington state plane north (US survey feet), where each pixel represents an elevation value in feet.Generating a "slope map" which shows all of the...
View ArticleVirtual raster calculator issue PyQGIS
I'm trying to use the virtual raster calculator process 'native:virtualrastercalc' using PyQGIS. When using the GUI and exporting the python code :output_layer =...
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...
View ArticleIterating over 2 input raster folders for raster calculator in ArcGIS Pro...
I'm currently on a project in ArcGIS Pro where I want to calculate the RVI of a RS time series collected by Sentinel-1. Unfortunately, I only have for each date one Tif-file for the VH and one Tif-file...
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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 ArticleDetrending DEM (QGIS)
I’m trying to detrend a DEM in QGIS. The best guidance that I could find on the internet was this question : Removing elevation trend over sloped surfaces?I couldn’t understand that so I would like to...
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Give non-overlapping parts of 2 rasters a value 0 (QGIS)
Is there a way in QGIS to give non-overlapping parts of 2 rasters a value of 0 in the new raster file? I would like the data gaps in the velocity file (so where Ice mask is displayed on the chart) to...
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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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How to extract the points at the height of 5 m from both side of the riverbed...
I have the line feature class representing the river channel and the raster file representing the digital elevation model. First, I generated the transect lines along the river line at every 20 m...
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