Questions tagged [rasterization]
The process of turning a vector into its raster equivalent
285
questions
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0answers
33 views
Creating raster displaying graduated Distance to polygon or feature using QGIS
I am trying to create a raster which displays the relative distance of a pixel to a set of polygons of a specific value.
I have satellite derived fire scar data going back for the last 20 years.
For ...
1
vote
0answers
56 views
Converting Vector (.shp) to Raster (.tiff) using Python GDAL library
I'm trying to convert a vector shapefile to a raster tiff file. I adapted the source code from Python Geospatial Analysis Cookbook by Michael Diener. The code works for line and polygon shapefiles but ...
0
votes
1answer
41 views
Rasterize vector based on list values in Google Earth Engine
I would like to convert polygon (as featurecollection) that has the attribute 'Name' which contains string value of plantation types, namely 'Rubber', 'Mango', 'Coffee'. However, the .reduceToImage ...
0
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1answer
31 views
How to burn coordinate point of polyline to the pixel value while converting it from vector to raster
I am trying to plot a proximity raster for secondary roads in a particular area. What I have is a set of polyline representing the roads. Now, I want to create a proximity raster based on the polyline....
0
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0answers
13 views
Polyline to Raster - Thicken overlapping lines
I have a featureclass with around 300 polylines. Since the all follow a route network to a single point, as they approach this point many of them overlap.
What i want to do is to rasterise the ...
1
vote
0answers
40 views
QGIS Rasterize - Use highest value in cell as burn in value
I am trying to create raster layers of presence/absence bridges in a project area to use as inputs for habitat suitability models. I am using 15 m x 15 m cell size.
The presence of bridges is ...
4
votes
0answers
108 views
Rasterize/Filter with Burn and Weight variables in QGIS
Using QGIS 3.10.1, I am attempting to rasterize some demographic polygons, and then apply a filter (Gaussian) to create a smooth/graduated surface. This works fine for some of my values (e.g. total ...
5
votes
2answers
141 views
Using GDAL tool rasterize with QGIS so that points represent center of grid
I want to convert point data into a grid and used the gdal tool rasterize. The tool works but unfortunately the result looks like this.
The converted point does not represent the center of the grid ...
1
vote
1answer
37 views
How to specify pixel resolution when converting feature collection to image in Earth Engine
I have a feature collection and I would like to convert it into a raster image. I would like the resulting image to have 30m spatial resolution.
How can I use the reduceToImage method to assign ...
0
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0answers
39 views
Creating DEM from contour or point shapefiles in QGIS [duplicate]
I'm trying to make a DEM tiff file from elevation shapefiles that I have in QGIS. I have both contour shapefiles and XYZ-point shapefiles but I can't seem to make the DEM. I've tried using SAGA but ...
2
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0answers
138 views
Rasterize GeoJSON or Shapely Geometry?
I am trying to rasterize a GeoJSON or shapely geometry but it does not rasterize all the geometry (some of it is not in the TIFF-file).
I tried gdal_rasterize -burn 255 -burn 0 -burn 0 -ts 4950 4900 ...
2
votes
1answer
43 views
Is it possible to use a Gaussian kernel over a polygon layer?
I just started to work in QGIS and I'm new to GIS in general. I have a polygon layer map with some attributes assigned to the polygons. I also have a point layer with some cities that lie over the ...
1
vote
1answer
46 views
Rasterize shapefile to raster based on a raster
I'm wondering if it's possible to rasterize a shapefile based on raster cells as shown below.
I've tried several algorithms on qGIS, but they haven't the option to create a raster based on another ...
3
votes
0answers
60 views
R raster / rasterize creating GeoTIFF with Null Value “grid lines”
I am attempting the seemingly simple task of converting a .csv with lat, lon and population values into a .tif (raster).
Here's my R code:
geoName <- read.csv("/pathToData/geoName.csv")
...
1
vote
1answer
42 views
Rasterise 3D polyline using z-values to interpolate cell values
Using ArcMap 10.5.1.
I have a ZM polyline composed of 3x vertices, with the vertex z-values representing water level at wells. I am looking for a tool to rasterize this polyline, using the z-values ...
0
votes
1answer
26 views
Rasterization - choosing attribute from attribute table for cell value of raster - why?
When a polygon shapefile is converted into a raster, an attribute from
the shapefile's attribute table must be chosen for the cell value of
the raster.
I am pretty sure the above statement is ...
2
votes
1answer
78 views
QGIS 'Rasterize vector to raster' failing to create viable raster
I had a DEM (.asc):
Which was converted to a shapefile point cloud (see attached below) and I'm trying to convert back to raster within QGIS 3.8.2
https://1drv.ms/u/s!AjCedBZJ5Eh4kEKj4AAjcItprRax?e=...
0
votes
0answers
39 views
Iterating spatial join with multiple merge rules (and then creating raster) in ModelBuilder?
I'm using a Basic licence in ArcGIS Desktop 10.3 with Spatial & 3D Analyst extensions.
I have a dbf file which contains point data for several days. I want my final output to be
a) a point ...
1
vote
0answers
49 views
Convert discrete data (e.g. geological units) to percentage within pixel?
I am looking for a way to convert discrete data in a way that they can be used in ecological niche models. I try to avoid factor data so I thought about transforming the data to %.
I have a ...
10
votes
5answers
427 views
Creating raster where each cell records distance to sea?
I want to create a raster with a 25 metre × 25 metre resolution, where each cell contains the distance to the nearest coastline, as calculated from the center of the cell. To do this, all I have is a ...
0
votes
2answers
112 views
Rasterize multipoint geometry in R
I would like to rasterize data on protected areas for certain countries (e.g. https://www.protectedplanet.net/country/TH, download button is at the bottom of the page). The dataset contains two ...
1
vote
1answer
34 views
Making black and clear raster image from polygon in QGIS?
I have made a polygon in QGIS (I just drew a polygon), but how do I make this into a raster image?
I want the raster image to be black (where the polygon was) and clear where the polygon wasn't.
I ...
0
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0answers
99 views
rasterio rasterize does not take geometry
rasterize(allshapes) return;
"ValueError: No valid geometry objects found for rasterize"
Testung a single shape:
print(shape.GetGeomFieldRef(0))
POINT (56.91288 27.33519)
print(is_valid_geom(...
1
vote
2answers
167 views
Points to raster (image) in Google Earth Engine
I have a bunch of points representing bird observations, and I need to convert this to an image in GEE where each pixel value is the total number of observations in each 1 km pixel. This is a very ...
2
votes
1answer
35 views
Outputting mean value when multiple input points fall within cell using QGIS Rasterize?
Using QGIS 3.8.2, I rasterize a Geopackage vector point layer using the Raster > Conversion > Rasterize tool, with output to a .tif file.
However, where multiple input points are within a single ...
1
vote
1answer
86 views
(QGIS) Shapefile with attribute table: Convert it to raster burning values of each polygon to the raster. “Heatmap”
I am working on QGis with a shapefile with an attribute table, I have created this shapefile through "Vector->Analysis tools->Count Points in Polygon", so this new shapefile got the count in the ...
2
votes
1answer
63 views
Vector to Raster Conversion in QGIS 3.4
I am trying to create a DEM from Vector points data extracted from Google Earth. What is the best method?
I get an error thrown each time, while trying to rasterize Vector point data to raster. ...
4
votes
0answers
46 views
QGIS export to PDF - rasterize only basemap layers but keep others as vectors
I am building my own map in QGIS 3.4 in which I created a basemap from ESRI satellite imagery and a ESRI hillshade overlay. On top I have several custom vector layers (country borders, city names etc.)...
2
votes
1answer
132 views
Error converting vector shapefile to raster (.TIF) in QGIS?
I am working with a shapefile of 10km grid regions of the UK obtained from digimap.
I need to convert this to a raster in order to do some analysis in R regarding agricultural intensity of 10km UK ...
1
vote
1answer
38 views
Polygon to raster
I'm using ArcMap 10.4.1. for my research I need to convert a polygon shapefile ( consisting polygons extracted from google earth) to raster. I am using the "polygon to Raster" tool. The output cell ...
3
votes
2answers
706 views
How to rasterize individual feature (polygon) from shapefile using GDAL/OGR in Python?
I would like to convert the individual records (polygons/features) of a shapefile to raster using GDAL/OGR. Here is the example shape and the mask raster. Rasterizing the full layer with all records (...
0
votes
1answer
116 views
Rasterising shapefile in Python? [closed]
I am trying to rasterize a shapefile with Python using ogr, but if you know to do with other libraries as fiona, I am interested in too.
I use the shapefile in the following website: https://www....
2
votes
1answer
144 views
Import multiple xyz files and rasterize them
How can I load multiple XYZ files in QGIS?
I want to load about 100 files to create from each one a raster so we can overlay our network on them.
Manually it's too much work. I tried to create a ...
2
votes
0answers
39 views
Rasterize a geometry using gdal.RasterizeLayer()
I am writing a processing script using QGIS 3.4. I need to rasterize a polygon using gdal.RasterizeLayer. The problem is the polygon is a list of QgsGeometry objects and not a layer.
n = (2*radiusInt)...
0
votes
0answers
57 views
How to get pixel per meter in MATLAB
I have a vector shapefile which is in unit of 'Meter' presenting boundary of overall Germany. I am converting it into raster format based on each pixel representing 300 Meters respectively.
After ...
2
votes
1answer
404 views
Convert point layer to raster QGIS 3
I have a .csv-file containing x and y-coordinates as well as different variables with attributes (var1 to var3). The csv looks like that:
Loading the data into QGIS with Add Layer → Add ...
1
vote
1answer
328 views
R: rasterize SpatialPolygonsDataFrame and keep factor field
I want to rasterize a SpatialPolygonsDataFrame and keep the values of a factor column.
Consider the following code (from Processing vector to raster faster with R):
library('raster')
library('rgdal'...
3
votes
1answer
139 views
r.surf.contour for large area
I have a vector file containing contour with 2m accuracy, covering a large area (All Hong Kong).
I tried to generate an elevation raster map with the file, by first rasterized the vector, using v.to....
0
votes
0answers
74 views
Making grid files (minimum curvature) from point data in QGIS?
Is there any way to make a grid file from point data (shape file) in QGIS?
I mean by grid a colored raster file like Geosoft .grd or ERMAPPER .ers file or like.
Minimum curvature would be ...
4
votes
1answer
856 views
Rasterizing polygon grid in Python (geopandas & rasterio)
I am trying to rasterize a custom polygon grid with one or more columns. Preferably I'd like to create multi-band rasters from multiple GeoDataFrame columns (in polygon grid), but I have got stuck ...
3
votes
1answer
84 views
What does the vector to raster option in QGIS do, exactly?
I have a large point vector layer (a few million objects) with measured elevation values and have converted it to raster, using the raster>conversion>(vector to raster) option in QGIS. It seems to ...
1
vote
0answers
28 views
Converting vector to raster on-the-fly using GRASS?
EDIT: I later realized that, instead of creating multiple 256 x 256 tiles, I could just create a single image to overlay on the entire map. However, I'd still like to know if there are better ways to ...
0
votes
0answers
39 views
Polygon to Raster conversion: Raster shifted ~10m horizontally. How to fix?
I converted a number of polygons into a raster. The cell size is correct but the raster has shifted ~10m horizontally.
Is there an issue with my method or is there a tool I can use to fix this?
1
vote
1answer
58 views
Rasterize produces wrong result - R
I am trying to rasterize a polygon in R using teh rasterize function but the output is not correct. I am comparing the result with the output produced by the rasterize tool available in QGIS
May data ...
1
vote
0answers
64 views
How to render vector data with muliple geometry types to georefrenced raster
I am using OSM vector data which has been converted into shapefiles. I have polygons representing buildings, landuse and lines representing roads as shown bellow:
I want to assign some symbology to ...
2
votes
1answer
265 views
Why does fasterize gives different output for multipolygons with and without internally resolved boundaries?
I was thrilled to be clued into the package fasterize, which speeds up the rasterization process in R tremendously.
However, I cannot figure out why the fasterize() function outputs two different ...
0
votes
2answers
102 views
How to convert multiple shapefiles of different geometries into a georeferenced raster
I have multiple shapefiles extracted from OSM vector data, as shown in the image bellow:
How can I render this into a raster of a specified resolution? Is there a way to do that using QGIS or ...
1
vote
0answers
44 views
Getting TIFF with gdal_rasterize
How can I properly rasterize isolines with an absolute height value in QGIS 3?
When using "gdal_rasterize" in the source code I got tiff with "holes", see image below
0
votes
0answers
44 views
Converting line vector layer to raster with pixellate.psp creating missing data?
The following example converts a line vector layer (road network) into a density raster. It seems to be working for others, but it looks like it's creating data gaps at my resolution (50m).
library(...
0
votes
0answers
19 views
Using Polygon to raster (folder)?
I'm having a problem when trying to convert "Polygon to Raster (folder)" on ArcGIS 10.5 ( SDM Toolbox v2.3).
Why are all output rasters much smaller than the input polygon?
