Changing the values of the cells in a raster.

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16 views

relating land cover raster to vector data [on hold]

I have a land cover raster basemap that covers different land cover/uses in Europe to 100m resolution and a separate Excel legend file. Separately I have a point shapefile with the details and ...
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0answers
10 views

Reclassify Tool does not show all my classes

In ArcMap I am trying to reclassify a layer (distance to roads) into 4 classes: 0 - 10 m --> 4 10 - 20 m --> 3 20 - 40 m --> 2 more than 40 m --> 1 However, only classes 1 and 4 appear in my ...
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0answers
23 views

Creating a new field based on another field and proximity to another shapefile? [closed]

I have a shapefile (sf1) with speed and another shapefile (sf2) with road locations. I'm trying to create a new field in sf1 that denotes commuting, so a binary 0=not commuting;1=commuting. I created ...
3
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1answer
67 views

GRASS r.reclass QGIS 2.14. error: “the following layers were not correctly generated”

I am getting a strange error message when running the GRASS r.reclass algorithm. The error states that: "The following layers were not correctly generated *reclassified You can check the ...
4
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1answer
37 views

Reclass to decimals

I have a integer raster with values 1 - 10, I would like to reclass each value to a decimal e.g 0.003, 0.44 etc. This obviously doesnt work in the Reclass tool, as only whole numbers are allowed. Does ...
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1answer
45 views

Reclassifying raster analysis (like the one in ArcGIS Spatial Analyst) in QGIS [duplicate]

I am trying to reclassify raster (DEM) in QGIS. I know how it is done in ArcGIS (Spatial Analyst, reclassify option), but I would like to know how it is done in QGIS?. The point of my exercise is to ...
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2answers
40 views

Arcpy Reclassify by Standard Deviation

I would need some help with the Reclassify tool. I have written a script that produces rasters which I need to reclassify. My problem is, I want the values to be reclassified by standard deviation ...
2
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1answer
43 views

ArcGIS: Reclassify Values as Parameter in ModelBuilder

Is there a way in ArGIS' Model Builder to set the values for reclassification (Tool Reclassify) as Model Parameters? The Reclassification is an important part of my model and I need to be able to ...
3
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1answer
71 views

How to use GRASS raster tools in the Processing modeler?

In the Graphical Modeler of QGIS, I don't see a way to import a layer into GRASS. The modules "import loaded raster" are not accessible in the Modeler. I want to use GRASS reclassify module, because ...
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2answers
48 views

whats wrong with my exported raster reclassify map in grass?

I'm trying to export a reclassify map in grass to a Geotiff format to pass it to DinamicaEgo platform. I have 6 classes in grass but when I export it, the exported map show me 255 classes and they ...
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39 views

Reclass a raster based off a percentage of the COUNT values using Con

I have a raster with a VALUE field and a COUNT field. I've sorted (descending) the VALUE field. Now I want to run a Con statement or a reclass to create a new raster based off the top 20% of the SUM ...
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31 views

Mask out values in a raster based on standard deviation

Does anyone know (in Modelbuilder or python) how I can remove any values of a raster that outside of the range of three standard deviations? I have a lot of rasters so it would be quicker than ...
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0answers
49 views

Python error when using r.reclass on raster with no CRS

I have a set of GRID data (directory of .adf files) that I'm trying to reclassify in QGIS. I'm using the GRASS r.reclass function to try to reclassify the layers, but GRASS keeps failing and ...
2
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1answer
117 views

Reclassifying a DEM using ArcMap 10.1

I have a DEM that am reclassifying into two classes. One areas less than or equal to 1000 and the other areas greater than 1000. Am accomplishing this using the reclassify Tool in ArcMap 10.1. The ...
4
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2answers
60 views

Keep “no data” tiles with r.reclass rules

Working in QGIS 2.14.0-Wien. I want to reclassify a raster with the r.reclass GRASS 7 tool, but want to keep the "no data" tiles as "no data". I understand that I need to create a text "rules" file ...
1
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1answer
38 views

Reclassify a raster based on proximity to other cells in the same raster

Using Arc 10.2.2 with the Spatial Analyst extension, I have a single band, signed integer, 8-bit raster. I need to reclassify cells within that raster based on their Euclidean distance to other cells ...
2
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1answer
114 views

How to reclassify multiple ring buffer using ArcGIS ModelBuilder?

I want to automate some simple procedure in ArcGIS 10.1: create a multi-ring buffer around a point at distances 500, 1500, 2500, 3000, 10000 m. convert to raster reclassify the multiple ring raster ...
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0answers
33 views

python 2 polygon intersection

I have slope values derived from a DEM which I reclassified into NoDATA and vaules which I need. Then I made a polygon from this raster. I need to do intersection or something like that with the ...
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0answers
26 views

Reclassifying NLCD data, specifically open water

I've been working with NLCD data at a county level. My goal is to reclassify the pixels that fall under the open water classification. I've got a hydrography shapefile for the same geographic location ...
0
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0answers
35 views

Preserving Reclassified Values as Attributes?

What is the BEST way to preserve original raster values as attributes in the output raster when reclassifying? I see that this question has been asked before as Making reclassified raster layers ...
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0answers
17 views

multi stage reclassification

Consider there are two raster datasets that have been generated by kriging interpolation (Spatial Analyst toolbox in ArcGIS 9.3). One raster- (a) contains certain values 'x' and the other raster- (b) ...
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1answer
74 views

Reclassify raster pixels underlying certain polygons using Python

I've got a shapefile with many polygons, each of which exactly overlays a contiguous region of raster cells; an example in yellow: For some of these, I want to use the polygon as a sort of analysis ...
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0answers
39 views

Reclassify a density surface a variable range of values

I have a set of points with a 'weight' value. I want to create a density surface from these points, classify it with 5 or so bins (actual number is arbitrary, but smaller than the default output ...
0
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1answer
156 views

Reclassifying rasters to two values (1 and NODATA)?

I am trying to reclassify a bunch of rasters, but when I run my script arcGIS crash. What I want to do, is reclassify rasters this way: every accepted value (0,1,5 and 64) to 1, and the others values ...
5
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1answer
89 views

How to randomly reclassify raster pixel values in ArcGIS?

I have a raster dataset (USDA Cropscape dataset) where each pixel is given a crop or landcover type (eg, corn, rice, urban area, forest). Some of the pixel values are classified as more than 1 crop/...
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563 views

Raster Reclassifying Error 999999: Error executing function, The table name is invalid. Failed to execute (Reclassify)

I need to reclassify some raster data which was made from Inverse distance weight from points. So after getting the Inverse distances weight, I tried to run reclassify, but got: Error 999999: ...
4
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3answers
296 views

Adding two raster datasets that overlap while maintaining extent of larger raster dataset?

I am using ArcMAP 10.0 How do I add two raster datasets that overlap while maintaining the extent of the larger raster dataset. I have thought of adding zero values to the smaller raster to then be ...
3
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1answer
342 views

Reclassify a raster value to -9999 and set it to the nodata value using python and or gdal

I modified a script which reclassifies a raster. It is based on the script by Roger in his blog (the second script) and it works pretty well.The problem I am facing is as follows: I would like to ...
5
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4answers
553 views

Raster reclassify using python, gdal and numpy

I would like to reclassify a raster file from a raster with 10 classes to a raster with 8 classes using pyhton, gdal and/or numpy. The classes are represented as integers. I have tried following the ...
1
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1answer
141 views

How to reclassify raster data that falls within a polygon

Thansk for your response Okay so I will reword my question more clearly I'm currently using ArcGIS 10. My task is to map forest cover with the image classification tool. The problem is some of the ...
3
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1answer
110 views

Reclassifying a polygon using ArcGIS field calculator?

I am trying to reclassify a polygon into three classes: 1 and 2 = 5 3 and 4 = 3 5 = 1 I have been trying to do this by calculating a new field in the attribute table but I am very ...
0
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0answers
17 views

Reclassifiy raster in R [duplicate]

I have a raster file which has been classified from 1 to 255. I have to reclassify into binary form where 1 to 11 must be classified as 1 and the rest must be 0.How would I be able to do it in R. My ...
1
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1answer
139 views

Reclassify in QGIS using Raster Calculator?

I have downloaded data from the USGS to create a Map for a malaria risk in east africa but my question is only about the actuall Input in the Raster Calculator. I have a RFE Tiff that shows the ...
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0answers
67 views

Reclass by Table giving output with only 8 catergories

I am attempting to reclass a raster from a table (using the Reclass by Table tool in Arc 10.3). The output value field I am trying to reclassify to is long integer format with values ranging from 0 ...
5
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1answer
90 views

How can I reclassify a raster by zone?

I have a raster layer of a river network containing weighted flow accumulation values and a raster layer of lakes (see image bellow). I want to replace the values of all the river pixel that fall into ...
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1answer
566 views

How to reclassify a raster in R?

wet<-readOGR(dsn=".",layer="shp") #wetlands r.raster <- raster() extent(r.raster) <- extent(wet) res(r.raster) <- 100 wet.r <- rasterize(wet,r.raster) #rasterize plot(wet.r) b500<-...
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1answer
221 views

Getting aspect and reclassifying raster files using Python in a loop

By using Python in PythonWin 2.7.3, I tried to obtain aspect files of a list of raster files in a folder(called database_Dem20) and save it to another folder, database_Dem20/testOutput. In the same ...
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1answer
195 views

Batch reclassifying rasters in folder using ArcPy?

I am very new to python. I am using ArcGIS 10.0. I am trying to batch reclassify rasters in a folder and put the outputs into the same folder but with a new name(trying to do this using outputPrefix). ...
2
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2answers
473 views

Classifying DEM according to elevation in R?

r<-raster("DEM.tif") How to do the classification based on every ten meters for example and have different colors too?
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0answers
188 views

How to resample a raster by defined value?

I have got an Euclidean Distance Raster and I need to resample it. I work for a security company and I need a map with the camera resolution (pix/m) in every point of the map covered by a camera. What ...
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1answer
36 views

Saving Reclassed Intervals

Is there a way to save reclassed intervals done on-the-fly as a layer without use of the reclass tool? I lost the reclass intervals I've created on-the-fly.
0
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1answer
125 views

Explaining ArcGIS Raster to Polygon output?

I want create a new shapefile with selected fields found in a raster which depicts landcover. I first attempted to run Raster To Polygon. However, some class names no longer appear, as shown here: ...
0
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2answers
159 views

Arcpy reclassify label display issue

I have been looking for about 2 days and I can't seem to figure out or find a work around for the symbology labels after a reclassify when trying to automate maps. I run the following code and it is ...
4
votes
1answer
470 views

Reclassification of raster

Is there a better way to do this? I'm trying to create a script that will change classifications of a raster to: 0 for: 0,7-9,15-20,40,62-63,73,78-87,89-130,132-151,153-175,177-203,215,228,251-253 ...
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0answers
157 views

Stream buffer and reclassification

![euclidean distance and the layout highlighted(but they are two different layers)][2]I have this task to perform for hydrology analysis as presented below: DETERMINATION OF STREAM NETWORK AND ...
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0answers
157 views

arcpy Unable to remove directory. Possible causes: 1- Not owner of the directory 2- Another person or application is accessing this directory

Using arcpy and reclassify, I'm trying to run a loop reclassifying the same dataset accoding to different values. I've reduced this example to three loops, the original is much longer. import arcpy ...
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0answers
29 views

Errors when using the Corridor Designer tool from Arctoolbox [duplicate]

I am using the corridor Designer ArcToolbox for designing a habitat suitability model and I've got the following errors: Error 010328: syntax at or near symbol SPACE ERROR 010267; Syntax error in ...
1
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0answers
90 views

Options to use different Remap tables in a ModelBuilder or Python Script

I am trying to figure out if it is possible to embed multiple remap tables into a drop down type list or for an option to be selected to be used in a reclassify tool that outputs a final raster for ...
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0answers
100 views

Reclassify weighted sum values

I have using weighted sum to find areas to plant trees. The values I get out by using weighted sum are 0.7-0.9 in floating point. I want to be able to reclassify this layer so I can then use region ...
2
votes
1answer
349 views

Reclassify on land cover raster won't work

I'm new to GIS so I apologize if this question is basic but I couldn't find my answer online. I'm trying to reclassify a land cover raster from the National Land Cover Database. I want to reclassify ...