Questions tagged [reclassify]
Changing the values of the cells in a raster.
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Reclassify by table
I'm using IFSAR 5x5 DEM Raster and run a Reclassify by Table with only 5 values 1, 2, 3, 4 and 5. Then I converted the reclassified raster into Polygon. When I checked the attribute table the values ...
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Starting from a DEM raster, is it possible to arrive at a polygonal layer with a slope greater than 30% not in squares?
On this site it is possible to download DEM maps of Italy with an accuracy of 10 meters: https://tinitaly.pi.ingv.it/Download_Area1_1.html
Bringing this raster into QGIS and running the Slope command ...
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Implement natural breaks (Jenks) in Google Earth Engine
I have a raster file representing a vegetation index. I want to reclassify that raster into 5 classes using the Natural Breaks method in Google Earth Engine. Additionally, I want to export the break ...
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Replacing raster values by list GEE
I have a raster that I have mapped his values. I have made a new list of values that I want to replace them. But I want the replacement to be by pixel to pixel.
Example:
original raster pixels value = ...
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Unable to convert raster to polyline
I'm having trouble successfully converting a raster to a polyline feature in ArcGIS Pro. My ultimate goal is to take the values from a raster image and join them to a line layer so that I can ...
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How to assign a value to a set of 25 identical pixels in a raster layer?
I am using ArcGIS Pro 3.1
I would like to create a new raster layer from an existing raster composed of 4 possible discrete values (MIN=0, MAX=4, VAL=0,1,2,3,4). This existing raster illustrate ...
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Using Raster calculator to extract all cells that have one of number of values
I'm using QGIS 3. I have a raster layer for Koppen Geiger climate which has one band with values ranging from 1, 30. I want to make a new raster with only cells which have a value of the climates I am ...
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How to merge raster classes using the raster calculator?
I need to do an analysis on landscape change for which agriculture is involved. In my raster they are defined as six different classes which is not relevant for my research I was wondering if you can ...
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Issue with GEE remap function
I am running into a strange error that I cannot seem to fix.
I want to reclassify an image in Google Earth Engine using lists. The values in one list bins represent the pixel values in the raster ...
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Reclassify raster data based on specified values in a field
I am building a processing plugin that uses elevation values from a shapefile to reclassify a raster data file.
Desired Table Group Condition
A: every unique value is treated as a group, and assign ...
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Geometric Interval Classification with GEE JavaScript API
I am attempting to perform a geometric interval classification using the Google Earth Engine JavaScript API. I have some code that calculates the geometric intervals given a start/end value & ...
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How to reclassify all contiguous pixels of the same class in a raster?
TLDR:
How can I reclassify a contiguous group of pixels of a single class into a new class while leaving non-contiguous pixels of that same class unchanged? I have been working in ArcGIS Pro (3.1), ...
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Reclassified image not showing in Google earth engine
What I am trying to do is simply reclassify the spectral indices generated in the google earth engine based on some threshold values. The thresholds are generated in the earth engine platform only. I ...
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Reclassify field values from txt rule file in QGIS
I need to reclassify all the values of one field of my vector file in QGIS. I'm trying to use the function v.reclass, using a text file as a rule file. I get this error:
ERROR: Either 'rules' or '...
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How can I create a new raster from two different rasters like v.patch does?
I have two rasters with zones and I want a patched product from these two as a new classification like:
Zone1 Zone2 Result
12 14 1
15 21 2
15 23 3
17 14 4
54 1 5
etc
each ...
