Changing the values of the cells in a raster.

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2
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3answers
356 views

Reclassify many rasters in ModelBuilder

How do I reclassify many rasters in ModelBuilder when each raster has its own unique values? For example, when you create a model in ModelBuilder and you add the Reclassify tool you may want to ...
4
votes
2answers
75 views

How can I identify lines that intersect a certain raster layer area?

How do I identify certain roads ( of a line shapefile) that intersect with a layer that is produced from the reclassify tool (for raster data)? I am trying to identify which roads specifically are in ...
2
votes
2answers
62 views

Merge classes using Reclassify in python

When I run the Reclassify tool from arcmap 10.1 and assign a 1 to each of the crop types it combines them into one class. However, when I try to recreate this in python it does not merge the crop ...
3
votes
1answer
536 views

How to use raster calculator in ModelBuilder to batch reclassify hundreds of rasters?

I'm not sure what the problem is here. I'm attempting to use iterate by raster to feed all the files through a simple map algebra expression (I'm looking at data that indicates probability of ...
2
votes
1answer
64 views

strange banding in output raster after weighted overlay

I am trying to conduct a weighted overlay. I have two rasters, one is a continuous slope raster that I reclassified to have 6 classes (8bit signed integer), and one is an elevation raster that I also ...
1
vote
1answer
302 views

Reclassify says Unique values cannot be obtained from raster, using values from dialog?

I am using ArcGIS 10.2. Whenever I reclassify a raster layer I get the following message:"Unique values cannot be obtained from raster, using values from dialog". This does not prevent be from ...
2
votes
0answers
58 views

Is it feasible to reclassify a raster which has been resampled/smoothed for display purposes?

Background: I have a Google Earth KMZ file which shows ground movements after an earthquake, arranged into discrete classes: From the KMZ file I'm able to download the original PNG images, which ...
1
vote
0answers
50 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 ...
1
vote
0answers
310 views

Saga Reclassify grid problem

I am using Qgis 2.1 ver. 5f5cd4c (64 bit version on win7 64) OSGeo installed. I was trying to reclassify a DEM in EPSG:32614. I used the SAGA's Reclassify algorithm in the processing toolbox. I ...
1
vote
0answers
347 views

Reclassifying a raster based on values in another raster

I am attempting to create a new raster based on the values of two rasters I have already created. I am using ArcGIS 10.1 Raster1 is an area with my true values. Raster2 was created by reclassifying ...
1
vote
0answers
198 views

Reclassify ESRI raster using variables from a SQL Server table (connecting with pyodbc)

I am trying to reclass a raster file (representing vegetation and land cover types) using values stored in a SQL Server Express table. I have a set of ~400 species records in the table, with each row ...
0
votes
0answers
67 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 ...
0
votes
0answers
62 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 ...
0
votes
0answers
75 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 ...
0
votes
0answers
40 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 ...
0
votes
0answers
116 views

Reclassify raster value

I'm curious if anyone has been able to change one individual value in a raster file? I'm using Arc 10.2 and trying to change the value 99 to -2 for 144 files using model builder. So far, I've only ...
0
votes
0answers
113 views

How to reassign the values of a raster, based on the pixels of the raster beneath it?

In ArcMap 10.2.1, I have two rasters. Raster1 shows the extent of a habitat, and each pixel contains a categorical value for its land cover type (values 1-3). Raster1 has the smaller spatial extent of ...