Questions tagged [rasterization]

The process of turning a vector into its raster equivalent

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2answers
388 views

Problem with contour lines thickness in bigger zoom levels

I'm a beginner user of GDAL tools. I'd like to rasterize contour lines into Tiff file (for example such region: N47E006), everything works for quite small zoom levels e.g. 10... but the problem is ...
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0answers
85 views

Rasterize and union problem

i've done the union first and then rasterized it. But now i want instead of that, to rasterize each one and then merge it as one. How do i do that? I mean without the union first off. on<-union(...
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1answer
2k views

Problem rasterizing

I am trying to rasterize a shapefile using the "rasterize" tool in qgis. The problem is that the resulting raster doesn't seem to rasterize correctly... The teal and purple lines show water flow, ...
4
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2answers
4k views

Problem with attribute field in rasterizing tool QGIS

I am trying to rasterize a vector layer using the "rasterize tool" in QGIS... The problem is that there is no "attribute fields" available to choose from (even though they exist!)...
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1answer
71 views

Location based service with normal image

We have an image for a park which has been rendered like this: Now we want to add some geographic service based on the data: building an Android Application with the following features: Display the ...
1
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1answer
502 views

How to turn shapefiles into raster and aggregate them into one raster

For example i tried this but it doesn't work rast_a<-raster(extent(shp_1)) res(rast_a)=100 rsh<-rasterize(shp_1,rast_a) rast_b<-raster(extent(shp_2)) res(rast_b)=100 rshs<-rasterize(shp_2,...
2
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3answers
815 views

Why are there strange horizontal lines in raster data?

I have a feature class (stored in a file geodatabase) containing information on land use for the Amazon rainforest. It is very detailed and looks like this I need to convert this shapefile to a ...
2
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0answers
2k views

create image out of geojson (gdal_rasterize?)

Short version: I need to know how I can convert a .geojson-file to an according .png-file (or any other image format) long version: I have a .geojson which was created by gdal_polygonize from a .png ....
2
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2answers
222 views

gdal RasterizeLayer gives different extent to arcpy PolygonToRaster

I have an existing ArcPy script which uses PolygonToRaster_conversion to convert a polygon shapefile to raster (tiff). I am now exploring GDAL/OGR and have used the cookbook approach to carry out the ...
2
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0answers
346 views

Stretching of geometry when rasterizing vector data on Google Maps

I'll start with a quick backstory on what I am trying to achieve. I'm working on an offline Android GIS tool and people are throwing giant datasets at it. It converts these into Google features (V2) ...
3
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1answer
972 views

Why processing.runalg(“gdalogr:rasterize”…) is not creating out files when running in the QGIS 2.6.0 console?

I want to use the QGIS python scripting functions to turn to rasterize a point vector using many different dimensions. Right now my code looks like this: import processing RasterPixelSize = (10.0,...
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0answers
1k views

Feature to Raster Error [closed]

I am attempting to rasterize a point layer using the Feature to Raster conversion tool. Each attempt, I receive the following error codes: ERROR 010429: Error in GRID IO: CellLyrCreateInternal: Grid: ...
3
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1answer
1k views

Choosing Point to Raster vs Feature to Raster in ArcGIS for Desktop?

I am converting point vector data to a raster dataset using nearest neighbor. I am using arcgis 10.2. The first step is to use the conversion toolbox, but there are two possible options: Point to ...
5
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1answer
6k views

convert vector (point shape) to raster (tif) using python gdal lib in qgis

I'm trying to convert a vectorlayer (point- shapefile) to a raster-dataset (tiff) using python gdal-library in qgis. On Graphical UserInterface I simple choose the menue "raster->conversion->...
2
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2answers
2k views

rasterize produces a raster full of NA values

I am having trouble converting a polygon to a raster. The desired raster is created, however all its values are equal to NA. require(rgdal) require(raster) #download a shapefile with 2010 census ...
0
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1answer
316 views

PostGIS Raster ST_AsRaster: error when creating raster from TIN surface

ERROR: rt_raster_gdal_rasterize: Could not create OGR Geometry from WKB ********** Error ********** ERROR: rt_raster_gdal_rasterize: Could not create OGR Geometry from WKB SQL state: XX000 ---------...
1
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1answer
97 views

Processing feature string fields to raster

I am using the GDAL python bindings. I am trying to rasterize a layer from an arcinfo coverage file, but the values I need to rasterize I have to calculate from string fields. OGR can not write to ...
3
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2answers
685 views

QGIS Layer Style - Adding intensity/color if elements overlay

I have a layer with thousands of points. I have been asked to represent this layer in way that can be easily seen the level of concentration of points in the layer. So when there is much point ...
3
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1answer
259 views

point feature to raster with count of unique points

I am using ArcGIS 10.1 with Python 2.7 I have a point layer with thousands of points that each hold an id value of its owner. One owner can have multiple points, meaning that points can have the same ...
2
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1answer
90 views

FME 3D forcer not accepting user parameter

I'm creating a work bench to turn a polygon dataset into a raster and then adds it to various existing rasters. I want to use a parameter so I only need to create one workspace and the user can select ...
1
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1answer
5k views

gdal_rasterize error: “attempt to create 0x0 dataset is illegal..”

I'm trying to use gdal_rasterize to convert a polygon shapefile into a raster, where the value comes from the 'COVTYPE' attribute. I try calling gdal rasterize like so (I'm calling from within a ...
3
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1answer
1k views

Rasterize vector while adjusting extent and resolution to reference raster?

I have a vector file which I want to rasterize and adjust its resolution to the reference map, in QGIS. I tried spatial_sync_raster function in R to set all the rasters into the same resolution as ...
2
votes
1answer
361 views

Combining many polygons from multiple datasets into one raster

I am a beginner in ArcGIS. I have a query regarding merging many polygons to form one big polygon, and then rasterizing it. The polygons are from varied datasets and represent different ...
5
votes
2answers
715 views

GDAL (or other open-source) equivalent of Arc's Point To Raster Tool

I'm trying to convert a python script that relies on arcpy into one that only relies on open source modules, but I'm having some trouble. The bulk of my processing lies in one Arc tool "Point to ...
2
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0answers
76 views

QGIS rasterize a styled layer [closed]

I disabled information from a vector layer with a styledefinition. Is it possible to rasterize only the styled information in QGIS?
1
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1answer
73 views

Convert shapefile to multiple single-value TIFFs

I have a shapefile that is composed of multiple overlapping polygons that represent extent of habitats of certain species. Here is a 1 MB example of such file from International Union for the ...
1
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0answers
297 views

GeoServer does not render polygon properly

I am trying to a get polygon layer from CSV file. I chose to do it via rasterization and polygonization in QGIS, however, GeoServer has problems correctly rendering some polygons. This is how the ...
14
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6answers
5k views

Convert line shapefile to raster, value=total length of lines within cell

I have a line shapefile representing a road network. I wish to rasterize this data, with the resulting values in the raster showing the total length of the lines that fall within the raster cell. The ...
2
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1answer
662 views

Rasterizing vectors in SAGA via saga_cmd - how to set the exact cellsize, extent (basicly grid system) based on other grid?

I'm doing some batch analysis using SAGA's saga_cmd. Basicaly I have a lot of grids and shapes (mainly generated in SAGA by vectorization of raster classifiaction results). Now I'm trying to make ...
3
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0answers
756 views

Difference between feature to raster and polygon to raster [duplicate]

(I'm using Arc 10.1) I'm trying to rasterize a data set. I have a shapefile with geographic coordinates (GCS_GDA_1994) which I want to convert to a raster with 100m grid cells. So I need to project ...
6
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0answers
2k views

Rasterize shapefile using another raster's size and resolution

Rasterizing a vector (shp) I face the following problem: I want my output file (the rasterized vector) to have the same resolution and dimensions as an existing raster. If I understand the interface ...
1
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1answer
1k views

syntax error when using gdal in python console QGIS

When I run the following code in the python console in QGIS I get a syntax error: import osgeo.gdal gdal_rasterize [-b 1] [-burn 255] [-a Pixelkost] [-te 170000.2 168000.27 177999.8 177999.8] <...
7
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3answers
2k views

How to convert a point layer to a raster grid that shows the frequency of points per cell in QGIS

I have a point layer that shows the distribution of a species. Is it possible in QGIS to convert this point layer to a raster grid in which the value of each cell corresponds with the amount of points ...
1
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0answers
561 views

Make a raster with pixel scale 100 by 100 meter with gdal_rasterize

I'm asking here, because, I've got great results last time. Here it is the next of my adventure with gdal_rasterize, I want to make a raster picture where each pixel correspond to a square of 100 by ...
0
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2answers
447 views

Rasterization in different bands

I have a set of vector based shape files, representing different types of ground coverage in a city (for ex: roads, buildings, open field,...). For the algorithm that I want to run on it, I need ...
2
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1answer
2k views

How to set the output extents of rasterization in QGIS

I am trying to rasterize a bunch of vector based shape files in QGIS. All these files are covering certain types of ground use in a city (houses, street, open field,...). I need these files to be ...
2
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0answers
243 views

How to rasterize a vector data with style

I want to make a utility in c++ which can rasterize vector data with some specified style. I know about gdal_rasterize. But the problem with it is, we cannot specify the style details. Do we have a ...
2
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1answer
169 views

how do i get a GDAL(using gdalwarp) clipped layer projected in pseudo mercator ESPG:3857 to not be shifted?

how do i get a GDAL rasterized layer projected in pseudo mercator ESPG:3857 to not be shifted ? i have a vector layer projected in ESPG:3857,after rasterizing using this command: gdal_rasterize -...
-1
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2answers
2k views

Polygon shapefile to Raster with Mask and Extent

I have a polygon shapefile (Vesijärvi lake). The lake has many islands, bays and inlets. When I look at the attribute table, there are actually two adjacent features: Northern lake and southern lake. ...
1
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1answer
452 views

QGis points distance from shore in metres

I have a grid of depth points in the Irish Sea that i'm trying to add other data fields to, in this case distance from shore. I've tried both of these suggestions to no avail, but am having some ...
7
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2answers
5k views

Issue Trying to create Zonal Statistics using Gdal and Python.

I am trying to create zonal statistics using Python and Gdal. I have a polygon shapefile and a raster file, and in order to do so, I am using a piece of code I found in StackExchange. The raster and ...
2
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2answers
939 views

r raster package rasterize failing:no slots

I'm having trouble rasterizing a shapefile using the raster package in R. shp<-shapefile(ZoneShape); lcRas<-raster(lcRaster); r<-raster(ncol=ncol(lcRas), nrow=nrow(lcRas), crs=CRS); res(r)&...
3
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2answers
417 views

How to create a hectare raster from vector input data in QGIS

I have a vector file containing points with an attributed value (no. of employes at that location). I need to create a hectare raster with the sum of employes for each grid cell. I'm using QGIS and ...
2
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1answer
3k views

Rasterize vector layers with different extents into identical raster grids with QGIS

I am working on a quite simple spatial potential analysis using QGIS. I have some ArcGIS knowledge, but I am new to QGIS. My task is to identify the functional inner city of a region based on ...
1
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1answer
1k views

R: data.frame to raster object error

I have a data.frame consisting of a points with an associated continuos value and their X,Y coordinates. Altough it's not stored anywhere it's projection is a Lambert conformal conic. I think this is ...
0
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3answers
11k views

How to rasterize a vector map?

I am looking for a way to create a raster grid from a vector map. I have a map consisting of shapefiles which I want to export as a raster with UTM coordinates. I was thinking of something using the ...
1
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2answers
1k views

How to convert a shapefile polygon to raster in C#

Does anybody know a way to convert a polygon (vector) in a shapefile to raster data WITHOUT using ArcGIS Explorer Desktop? Is there a way to do this 'progmatically' in C# (WPF with ArcGIS runtime ...
3
votes
1answer
7k views

Convert a SpatialPolygonsDataFrame to raster using rasterize function

I'm trying to convert my map (a SpatialPolygonsDataFrame) into a raster, using rasterize function, here is a bug that I don't understand... > class(parcel) # this is my map [1] "...
13
votes
2answers
7k views

How to split shapefile per feature in Python using GDAL?

is it possible to split a shapefile per feature in python? (best would be a solution where i can temporarily save the resulting vector objects to the memory instead to disk). The reason: I want to ...
2
votes
1answer
116 views

What units are used in GRASS Rasterize?

What units are used in GDAL Proximity or GRASS Rasterize? - 'new size' parameter