In this context means to cut or trim an image or raster file. Do not use in association with questions to do with farming or agriculture

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1answer
15 views

How to merge GDAL tiles and crop via a bounding box

I am using GDAL. Assume I have four adjacent GDAL tiles in the formation of a square. I have a bounding box with a corner in each tile so that the rectangle formed spans all four tiles. My goal is to ...
1
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0answers
18 views

Cropping vector map into tiles with QGIS - how to get around shapefiles which have stray points on boundary of tiles?

I am trying to use QGIS to generate a set of tiles in Shapefile format from a vector coastline map. My script is correctly generating the 5x5 degree tiles I want, however a few tiles clearly have ...
0
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1answer
11 views

How to extract/crop an OSM file to include entries that intersect with a GTiff?

I am trying to get just the datapoints that intersect with the boundaries of a GeoTiff image for some internal testing on an algorithm. Are there any tools that can perform this operation? If not, ...
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2answers
31 views

How to use Landsat 8 or MODIS products to classify land area

Anyone know of a good tutorial where I can learn how to use satellite vegetation imagery from Landsat or MODIS to classify which crops are grown where over time for a West african country. I don't ...
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0answers
12 views

Cropping out overlapping raster areas from old maps?

I am trying to take out the white bordered areas from my crop lines from multiple PDF maps I georeferenced and now exist as rasters. My goal is to mosaic or merge them all together to have a seamless ...
0
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1answer
62 views

Error message received when cropping raster with clipper

QGIS 2.10.1 Pisa Message -> Error: Computed -srcwin 8208 142185 0 0 has negative width and/or height. Tried with several different files and types of raster files [GeoTIFF, MrSis, ECW], the same ...
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1answer
61 views

Crop Raster from using Polygon shapefile in R

I am trying to crop a raster by a polygon in R to the state of Sergipe-Brazil. My raster is a raster brick criated by 7 .tif files which are EVI (vegetation index) time series. Since the EVI archives ...
2
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1answer
35 views

Cropping Geo-referenced scanned maps

So I geo-referenced a few scanned maps successfully, however when it orients the scanned map correctly, a black rectangle background appears behind the map. This doesnt allow for me to "puzzle" ...
2
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0answers
91 views

R Efficient Way to Resample, Crop, and Mask a Raster Image

Does anyone know an efficient way to resample an image? I am currently trying to crop a large image and clip 2 regions from a shape file. From this clipped image, I would like to increase the pixel ...
0
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1answer
35 views

Masking low quality raster with polygons in R gives weird overhang?

I am pretty new to R, and have been attempting to use the mask function on a raster image of 250mx250m resolution. My problem is that for some reason I am getting overhang, as there are pixels which ...
0
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1answer
157 views

GeoServer crop Coverage WPS with Image Mosaic

I'm running GeoServer 2.7.4 und Ubuntu 14.04.3 LTS. I got several areas covered by aerial images. Now I want to offer these areas as Image Mosaics and give users the ability to select a subset by ...
2
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3answers
76 views

How to crop a river from a raster layer?

So I need to include the extent of a river into my map, but only have a raster file that shows the outline of the river with a blank (white) background: Is there any way to crop this file so that my ...
3
votes
1answer
36 views

Problem with automated data storing during raster::crop (‘legend’ is not a slot in class “RasterStack”)

I am working with a set of raster layers containing CHIRPS monthly rainfall amounts over Africa. For purposes of reproducing the below code, I staged the decompressed tif files on Dropbox. Now, let'...
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2answers
417 views

Really slow extraction from raster even after using crop?

I have a large raster file (245295396) cells and stacks of rasters having 4 layers each which lie in the extent of this large raster. To start with I am trying to get value from one stack (3 channels) ...
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0answers
18 views

How to randomly apply a feature from the attributes table (an area) to a bigger area in ArcGIS 10?

I am rather a beginner at ArcGIS and I have absolutely no idea how to do this. I have to design an agricultural area, which I have the whole of it, but I am not sure which farm plant which crop and so ...
1
vote
1answer
118 views

How to crop a shapefile using a raster with Geotools?

I'm working on a project for my school for which I need to use Geotools. I need to be able to display a raster file and a shapefile, but the shapefile is way bigger than the raster and I just want to ...
2
votes
4answers
660 views

How to crop Geotiff image in C++ (GDAL or other possibilities)?

I am developing a code to process a geotiff image. But firsly I need to crop a geotiff image preserving its metadata (projection...) in C++. My idea it's to provide the corners and the geotiff image ...
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4answers
3k views

Increasing speed of crop, mask, & extract raster by many polygons in R?

I'm extracting the area and percent cover of different land use types from a raster based on several thousand polygon boundaries. I've found that the extract function works much faster if I iterate ...
2
votes
1answer
279 views

How to export subset of data in QGIS to DXF

I have QGIS loaded with multiple layers. I want to save to .dxf but the map is so massive it results in a very large file. I only need a small portion of the map, so I was wondering how I can crop the ...
1
vote
1answer
547 views

Box cropping shapefile based on particular latitude and longitude using QGIS? [duplicate]

I have a shapefile and I need to crop/clip it based on a rectangle of particular latitude and longitude using QGIS. If it is possible, how do I do that?
3
votes
2answers
959 views

Cropping or removing borders (not NoData) from multiple scanned and georeferenced maps (ArcMap or QGIS)

I have several hundred scanned maps in TIFF format, each correctly georeferenced and forming a large grid of images. The problem is that the border for each map is present - a white band, with a black ...
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0answers
498 views

How to crop coverage with WPS chain in sld?

I had 2 layers: custom:Temperature: Point layer. custom:Region: Polygon layer. I would like to perform a gs:CropCoverage of the Raster Layer which is the result of gs:BarnesSurface of vector layer '...
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0answers
127 views

GeoTIFF Mosaic/Crop/Translate in QGIS?

I routinely have to mosaic multiple GeoTIFFs together, extract a rectangular area, and save that area as a JPG with a world file. Typically I've been using commercial software for that (Geographic ...
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votes
2answers
2k views

How can I crop an area from openstreetmap in QGIS? [duplicate]

I have used openlayers plugin, and I downloaded openstreetmap. I need now only a part of the map, not all of it, how can I do that? I need to crop Dubai city as example, I tried to use Clip in Vector ...
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votes
0answers
70 views

How to crop google hybrid map in QGIS? [duplicate]

I download google map from openlayers plugin in QGIS, it was like this: How can I crop the view to get a certain area from the map like this:
2
votes
1answer
363 views

Raster topo map “collars” overlap

I am using QGIS 2.0. I have downloaded USGS 1:100,000 topographic maps which show adjacent areas. The topographic maps were digitized with the borders (I've seen them called "collars", I think) as ...
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3answers
1k views

How to crop an image based on a shapefile using GeoTools

I'm writing a web application using GeoTools (it's Java running in a web container). I need to crop a raster file based on a shape file. The core GeoTools documentation and examples I can follow ...
4
votes
2answers
816 views

How to cut a SHP based on another SHP using R

I have a Shapefile of points with certain information. I have another Shapefile with polygons corresponding to the states of the country I am working with (in this case Mexico). Since I only want to ...
2
votes
1answer
939 views

R - Crop a pixel image produced by spatstat with a boundary shape

i am using the very good spatial statistic package spatstat to produce probability maps of spatial point patterns. Here is a simple working result from the examples to try out. require(spatstat) ...
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0answers
192 views

How can I create a multi layer exportable file (.xcf .psd) from multiple raster image in QGIS?

I have many raster file of the same zone but in differents spectral bands. I would like to create an exportable file of a small portion that can handle different layers. So in practice I would like to ...
9
votes
1answer
12k views

How to crop raster layer?

Can anyone tell me how to crop a raster layer in QGIS? I want to make contours from a section of a layer, and including the whole layer will create far more data than I need and slow down the ...
0
votes
2answers
3k views

How to crop a Raster by Region?

I have created a grid using the point density function in VM. I would like to crop this image to a region created from buffering a polyline feature set. Is this possible? Alternatively I have used the ...
3
votes
1answer
1k views

Cropping an image with a map extent

I have an raster file in my server space, which has the same projection as my webmap, and I would like to crop the image by passing the visible extent of a webmap. I think the cropping function is ...
3
votes
1answer
1k views

Is there a way of cutting a raster map that is displayed in the GRASS GIS Map Display?

I have a raster map that I generated from cropping/masking from a bigger raster map. It produced a map with only a portion of not null values. I only want to have a map that is zoomed in to the ...