Raster is a data format consisting of regular grids of values, usually stored in an image-like format.

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Project Raster Data Loss - 2 Billion People

I am using the SEDAC/CIESIN raster data for population counts. This data is in WGS1984, and I want to project this data to a Fuller projection. After running through "Project Raster" in ArcMap 10.1, ...
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84 views

Creating an R factor raster in RUSLE Soil Loss equation with multiple input rasters

I am attempting to obtain the rainfall erosivity "R" factor for the RUSLE Soil Loss equation using rainfall PRISM 30 year history data. I have both monthly and annual data that comes into ArcMap as ...
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16 views

Reprojecting a ECW raster with fwtools [duplicate]

I have a ECW Orthophoto and i want to repoject it from 25830 to 23030 srid. I haven´t found a free software to do this but i heard of a command line utility called FWTools that could do the job. I ...
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36 views

Point to Raster Converting Result

I had a problem with Point to Raster converting result. I had an Excel file which contains x, y and z values. I wanted to create an individual raster data from classified z values so I planned to use ...
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83 views

Zonal histogram for each region (row) in a polygon (table) with python script

I have DEM.tif (symbology uses equale interval - 100m) and a polygon file (regions.shp) with many regions (names are defined in 'reg_name' column). I would like to use Zonal Histogram to produce ...
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28 views

How to avoid a problem of one pixel when doing non-linear regression?

I am ruining a non-linear regression using nlsLM from package:minpack.lm for multiple rasters (pixel by pixel). My initial values may be appropriate for some pixels but not for others.When I run the ...
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36 views

Creating a time series from multiple rasters in ArcGIS

I have 10 rasters (10 yearly averages of data) that I've uploaded into GIS. I would like to do two things: Create a time-series of the values of that raster at one specific point within it. Create a ...
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41 views

crop shp file leads to different results for same extent

I cropped a shapefile to a smaller extent (my AOI - area of interest) - to work with a reduced working directory. During my workflow I rasterize the shapefile. Here is my problem: I saved both of my ...
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89 views

Mosaic to New Raster: Problem with min and max values

I have to combine several DEM rasters into one from this source: http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp, so I use Mosaic to New Raster tool. I set up the tool: 1) I input the rasters (all ...
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98 views

Raster to polygon with RGB composite using Arcgis

I am trying to convert an RGB composite to a shapefile to use with. The raster to polygon function returns with three shapefiles with "grid_code" of the value of each of these three channels. I am ...
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41 views

Reduce raster resolution based on cell ratio

I have 2m impervious/non-impervious data. I would like to reduce the resolution to 30m and have the cell value for the 30m data be determined by the ratio or proportion of impervious / non-impervious ...
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45 views

Problem with conversion from raster to polyline (not a single curve)

I have raster file and I need to convert it to line. I used GIS tools Convert Raster to Polyline but the line segment is not straight and it is divided into no of segments, isn't it possible to get ...
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73 views

Apart from “in-memory” space and physical geodatabase, is there any other method to process raster data?

Using the centroid of the building footprints (tagged residential), I want a count of hydrants within 135m, and a count of hydrants within 270m of every residential footprint. This would be based on a ...
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30 views

White Pixel in Raster (CIR) arcmap 9.3

i have to analyse forest cir orthophotos. in high scale resolution, many white pixel appear instead of red ones. i work with arcmap 9.3, win7
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44 views

How to import Esri Raster to IDRISI with NoData value?

I made some point features in ArcGIS Desktop to build training samples to import to IDRISI. I had 7 classes and convert the feature to raster to build the signature in IDRISI. When I import the data ...
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20 views

Aligning to DEM after TIFF conversion to GRID?

I can convert a TIFF (NASS Cropscape) by using Create Raster in my .gdb or Export to other Format. However, all efforts to align the extent to an existing DEM have escaped me! I have tried Snap ...
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78 views

What exact format do I need to have for the inputs to make Path Distance work?

I am trying to run the Path Distance tool in ArcGis 10.1. Ideally I would like to utilize Tobler's hiking formula anisotropic approach to slope and a land cover cost surface to calculate the least ...
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66 views

How to cut a raster into smaller, equal area parts?

I have a large raster file that I need to cut into smaller parts. I already have a polygon shapefile that has the smaller parts that I want to use as an index. The reason for this is that end users ...
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75 views

Use NASA data (.grd) in ArcMap 10.2?

I am trying to use soil texture data from NASA (http://ldas.gsfc.nasa.gov/nldas/NLDASsoils.php#VIC), but I cannot figure out how to use the .grd file type in ArcMap. I have tried to save as .asc and ...
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86 views

using raster.predict for Cubist model, factor levels list

I would like to thank in advance any help or advice. Let me know if I need to provide more reproducible data/code. I am working on a Cubist prediction model for soil texture, using continuous and ...
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52 views

How to randomly generate 3 X 3 pixel window/grid size in ArcMap?

I have a raster image in ArcMap and I want to assess the accuracy of my raster image with a reference image. So, I need to randomly generate a bunch of (i.e 50) 3 X 3 pixel window/grid size from my ...
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177 views

Convert GeoTIFF Raster to JSON?

So I need to convert raster data to JSON format. Is the best way to do this to convert the XML files associated with the rasters to JSON? ARC Map has a tool to convert vectors to JSON, but not ...
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87 views

Mosaic To New Raster - Raster Cells Shift

I have wind raster datasets for the U.S. that are organized by state and I would like to merge these datasets to get one map of the whole U.S. I am new to using ArcGIS and through some research I ...
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82 views

Converting raster presented in KML to polygon using ArcGIS Desktop?

I have spent quite a lot of time Googling which brought me many places including this site, but I haven't found the resolution. I have a KML that presents a PNG. Radio Mobile generated the files and ...
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40 views

How can I avoid a specific area of raster?

I have a raster polygon. I need to avoid certain area (another raster) from that raster. I need to avoid a watershed sub basin area that has its area on other basin also. How can I remove that basin? ...
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48 views

How to visualize a C-band SAR sensor measurement

Files: \measurement\s1a-iw2-slc-vv-20141205t171642-20141205t171705-003587-0043c5-002.tiff Size is 24435, 13472 Coordinate System is `' Metadata: AREA_OR_POINT=Area TIFFTAG_DATETIME=2014:12:05 ...
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39 views

Downloading data after clipping

I have an issue with downloading data from GeoServer after clipping layers: 1. I can download vector layers as GeoJSON and GML, but cannot download as shape-zip: file becomes corrupted; 2. I cannot ...
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54 views

ClipRaster Class of DotSpatial is problematic

I want to clip a raster data with a polygon extent. Here is my Layers. Polygon layer is colored and raster is black and white. When I cliped using ...
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26 views

Can a raster be projected twice?

I have to georeference a raster (tiff) twice. That is due to the limitation of control points I have. The first georeferencing works perfectly. The problem comes when I georeference the raster for the ...
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47 views

How much does relatively up-to-date 1 meter resolution color satellite imagery cost?

I'm starting to realize that I'll probably have to pay for good satellite imagery, and the sites I've been to so far want me to call them to ask for price quotes. I'm wary of this and haven't done it ...
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57 views

Calling each pixel using spatial modeler language of Erdas Imagine?

How to call each pixel from a 4 layered raster image using while loop of spatial modeler language in Erdas imagine 2011? I need to consider each pixel as a 4*1 matrix and want to calculate the ...
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49 views

How to combine two `GridCoverage2D` to make a new `GridCoverage2D`

I was wondering if there is any GeoTools code example which combines two GridCoverage2D to make a third new GridCoverage2D? I can find examples for reading pixels from GridCoverage2D or writing a ...
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54 views

OSGEO/GDAL and Rotated Pole Grids

I have a netCDF containing a raster in a rotated pole grid. I have a script for converting the desired information to GeoTiff, however it requires projection information in the form of WKT string. ...
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22 views

Geospatially match cells of different rasters - possible?

I have 2 rasters that were originally vector polygons. Raster2 was created from a selection of raster1. After converting both to raster, their cells don't match up (i.e. attribute info for each cell ...
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25 views

QGIS multiply(add) two raster but divide(deduct) another raster

I am making a parking analysis in one town. I need to obatin the zones where the parking of car is harder because there is less places to park and higher demand of cars.I have three rasters. First ...
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31 views

Specify the NoData pixel from 255 to a lower value pixel value

I have a series of raster files (tif) that extracted using a particular shapefile. However, the output files became much larger (from 2 MB to 200MB). The NoData is now equivalent to pixel value of 255 ...
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37 views

View Oracle GeoRaster in ArcMap

I have imported SRTM DEM into Oracle 11g using FME.The block size is set to 128X128.I am able to view the data in QGIS,Tatuk and play with it using GDAl command line.Unable to view the same in ArcMap. ...
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23 views

Unable to execute the algorithm using SAGA LS factor

I tryed to calculate the LS Factor at SAGA, using a slope raster and the area raster, both at the same EPSG, and the error:Unable to execute the algorithm the error means something with the coordinate ...
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41 views

How can i perform area calculations in a raster file?

I would like to know if is possible and how can i calculate all areas or parts of it in one raster? Can i do it using the raster calculator? All help is appreciated, Best regards
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37 views

Got different cell sizes from a rasterised data

I'm trying to rasterize the Land cover data of Nigeria which was obtained from FAO database. During the process of rasterizing the land cover data, I used the following information which gave ...
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1answer
51 views

Mosaic to New Raster not allowing correct overlap

I am not sure what exactly is causing hiccups for me - how I processed the data (removing the white edges in 3rd party software), the bit depth (8bit), the file format (png to support transparency), ...
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33 views

How to get background maps to show in QGIS Cloud mobile version?

we're a group in Denmark, trying to publish some maps for use on a mobile device, but although our background maps show up in the desktop version, we can't get the mobile version to show them - What ...
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1answer
23 views

Raster Files Sizes from Point Data Extremely Different

Using ArcGIS 10.1. I created rasters from several groups of point rasters using the Point to Raster tool. All of the points groups are similar size and extents. The first group of points had a file ...
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68 views

How to run GAM with raster package?

When I am using the raster package to predict a surface probability map of species distribution using the following functions in R, the following error occurrs: CA132122200=raster("F:/CBG ...
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31 views

QGIS Export section from raster to AutoCAD

QGIS Windows 7 I have a raster which displays the flood depth over my site. What i would like to do export to AutoCAD an outline (maybe as a polygon or line) of the sections of the raster which are ...
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61 views

Clip .hdf (MODIS) rasters by shapefile

I am trying to do a temporal analysis on vegetation quality so I downloaded a MODIS .hds raster from earthexplorer. When I opened the file into ArcMap 10.2.2, it came as a group of 11 rasters. I stuck ...
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100 views

For loops + boxplot for raster

I have several Rasterstacks (b1_mask, b2_mask,...) of several layers representing only a determined pixel-intensity range. (So point "A" in some layers is "NA" - in others a "value" of that certain ...
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48 views

Reference raster data outside of GeoServer data directory

is there a possibility to point GeoServer to raster data stored neither in a database nor in the data directory of GeoServer? My problem is that IT keeps me from direct access to the GeoServer ...
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107 views

how to use raster layer (map image) as base layer in geoserver+openlayers and vector layers on top of that?

I am using Openlayers + Geoserver for rendering data on India Map. I am able to do it. However, the India map generated from Opensource shape files doesnt look good. So, I want to use Better India ...
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44 views

Updating/replacing GeoTiff data store on file system causes GeoServer to halt

I have a few hundred raster layers that are updated at least 4 times a day. The GeoTiff's are updated directly on disc. I'm running it as a windows service and I can sell the wrapper app logging the ...