Questions tagged [vectorization]
The conversion of raster data (an array of cell values) to vector data (a series of points, lines, and polygons).
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Converting image of map into vector format [closed]
What is the best way of converting a gif of a map into a vector format, such as a shapefile?
The only relevant parts that I am interested in are the outline of the island so I realize some manual ...
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2
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Converting raster to vector by generating center lines?
I have a binary raster containing boundary pixels with the value 1 (white) and no-boundary pixels with the value 0 (black):
I would like to vectorize the raster by keeping one center line trough the ...
- 1,576
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Convert raster to a CSV values and lat long based on raster value in QGIS
I am looking to convert a raster into a csv file (or tab delimited) based on values in the raster (Value > 0).
The csv would have three values, latitude of center of cell, longitude of center of cell,...
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How to convert float raster to vector with python GDAL
I have float raster and now I want to convert it to vector. How is it possible with the Python GDAL library?
I have tried with gdal_polygonize.py of GDAL utilities on the command line and it worked ...
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Extracting GeoTIFF colours and adding to equal geometry shapefile
I have the following map in .png-format that I would like to replicate, but I cannot obtain the original data.
The map shows the current water supply vulnerability for local municipalities in South ...
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Creating polygon with extents of raster file in QGIS
I have a tiff image file and want to get a polygon with the extent of the tiff.
Is there a direct way of doing this?
Right now I have to convert the image to vector (with gdal_polygonize) and then ...
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How to smooth large vector polygons from Raster
I have a landuse classification raster file (6 classes) of a large area. But I need it in vector polygons so I vectorised it. No problem so far, but the result is - of course - that every pixel is ...
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How to generalize and vectorize a LandUseClassification raster file?
I want to vectorize that rasterfile with its 6 landuse classes. The classification is very noisy and have to be generalized before.
The result should be a polygone vector file.
I use SAGA, (GRASS) ...
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Spatial statistics tools : clustering analysis on raster data
I've an apparently simple problem, but i can't find a clear methodology to use.
I'm tasked to delimit "urban areas" by vector convex polygons, using the Gridded Population of the World dataset from ...
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Scriptable alternative to ArcScan (particularly vectorising lines within tolerances)?
Sadly the answer to Can you access ArcScan from a python script? suggests that it is not possible to script ArcScan from within a python script.
Therefore, does anyone know of any alternatives to ...
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Converting Esri ASCII raster to Shapefile for CartoDB?
I have an ArcGIS grid ascii file (Ramankutty Cropland at 5 minute resolution) that begins as follows:
ncols 4320
nrows 2160
xllcorner -180
yllcorner -90
cellsize 0....
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Vectorizing raster with values between 0 and 1 in QGIS
I am working on QGIS. I have a raster of EVI, in which values are comprised between 0 and 1. I need to vectorize this raster in order to make an intersection with another vector.
My issue is that when ...
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Converting each Rastercell to its own Point-Vector, Google Earth Engine
Related Post
My goal is to perfectly obtain one vector point per raster cell, located at the Center of the RasterCell
Running .reduceToVectors() with the scale argument retrieves vector points, but ...
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Convert image in KMZ to polygon
I have a KMZ file that contains several image overlays (RF coverage plots).
I would like to convert the image overlays to polygons to decrease loading time in Google Maps.
Currently I'm tracing a ...
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1
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Seeking GIS tool to automatically extract polygon geometries from images
Let's say I have multiple png images like the following one:
I'd like to find a way where I can automatically draw polygon geometries on this image. Something like the following:
My expectation is ...
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