Spatial Analyst is a extension within ArcGIS that provides a range of spatial modeling and analysis tools.

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Using Area Solar Radiation tool. How much time will it take? [duplicate]

I'm trying to do a solar radiation map for Portugal, using Area Solar Radiation tool from Spatial Analyst tools. What I want to know is how much time will it take to finish? It's running for 2 days ...
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19 views

Obtaining ArcView 3.2 Spatial Analysis 1.1?

Is it still possible to obtain and use a copy of the Spatial Analyst 1.1 extension to ArcView 3.2 in order to finish a final project at a University?
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2answers
32 views

SplineWithBarrier (Spatial Analyst) - different results between model builder and external python script

I'm puzzled by different results I get from application of SplineWithBarrier (Spatial Analyst) using Modelbuilder and by external Python scripting: import arcpy points_shp = "pointShape.shp" ...
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42 views

How to estimate Kriging parameters in ArcGIS

I have got the following problem: I have got a shapefile of rain gauges with a field giving the precipitation amount in a particular day. I need to interpolate the precipitation values to obtain a ...
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28 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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1answer
13 views

How to identify downhill cells for a dispersing frog?

I'm hoping that someone on here can help me out with a task. First, let me set the scene. I'm working on a movement/cost analysis for frogs dispersing from 135 wetlands located in Maine's mountains. ...
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9 views

Is there a way to terminate the Particle Track tool based upon a specific change in direction angle (ArcGIS 10.2)?

I am currently using a Python for loop structure to process a CSV file of coordinate points through the Particle Track tool in Spatial Analyst. I understand from the tool instructions that tracking is ...
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39 views

Determining Flow Direction in ArcGIS for Desktop?

I have a problem with the Flow Direction tool ArcGIS 10.2.2. After running the tool on a digital elevation model in .tif format 16 bit unsigned integer. However the result is an image of 8 bit ...
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43 views

Is there any statistical measure/tool that compares two different sets of location configurations in R or ArcGIS/QGIS?

Here is what I'd intend to do; I have a given set of facility locations as shown below; And based on a predefined one optimization criterion, I obtained the following configuration (and there are ...
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1answer
32 views

ArcGIS Spatial Analyst in arcpy - FATAL ERROR (INFDEF) DIRECTORY FULL

I have been running into this error in several geoprocessing scripts I've written lately. When I call a spatial analyst function I return this error: FATAL ERROR (INFDEF) DIRECTORY FULL import ...
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2answers
68 views

Create map(s) to help determine site selection

I have the task of creating a map in which the objective would be to help determine a site for a conference. I have the following data: Addresses of possible conference attendees (I have already ...
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1answer
38 views

Automating estimation of invert elevations using ArcGIS for Desktop?

I’m working on a project where I need to estimate about 1400 pipe inverts using the adjoining pipes and manholes. The problem is a lot of the adjoining pipes are missing elevation data as well, so ...
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1answer
49 views

Wedge neighborhood on Focal Statistics calculation

I am using Focal Statistics in Spatial Analyst of ArcMap10.2, and use the wedge type of neighborhood for a radius of 10 km around each processing pixel. I want to calculate the maximum elevation for ...
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17 views

Calculating distribution of points compared to raster in ArcGIS for Desktop?

I'm trying to calculate the distribution of points against raster layer classes. What tool would suit this process best?
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35 views

Assigning score to raster based on cell overlap with other raster and field value

I have a set of rasters that I've assigned scores to individually (scored based predominantly on values of other fields). The scoring scale is the same for all rasters, but the factors that determine ...
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1answer
79 views

Finding correlation between point location and raster value

I have what i thought was a very simple problem but i think i may have overthought it.... I have a population density raster and a point feature layer showing the locations of X (about 70 points). ...
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24 views

Filtering for slope using kernel size in ArcGIS Desktop?

I have problem in smoothing the slope derived from digital elevation model. I want to do filter for the slope <5 degree in 7 X 7 kernel size, 5-20 degree in 5X5 kernel and >20 degree slope in 3X3 ...
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1answer
64 views

Count Number of Times 100 Feature Classes Overlap

This must have been asked before, but I can't find the exact answer and my attempts so far have not worked. Most of the overlap questions I see are for calculating the area of overlap for portions of ...
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1answer
33 views

How can I come up with the spatial variation of ndvi using arcgis 9.3.

I would like to come up with the spatial variation of NDVI of a certain area. I have the average NDVI from 1998 to 2014. I'm using Arcgis 9.3
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29 views

Create .lyr file from a raster and add to display

I'm working with rasters, there are 3 folder (input, query, result). In the input folder are the basic rasters. The user can choose between these rasters, the code can collect the rasters into the ...
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16 views

implement aspect in least cost path analysis to account for downhill and neutral ground movement [duplicate]

I am creating a least cost path model for large species that migrate over large distances across a rugged landscape (elk, deer, etc.) To calculate movement cost I am using a slope raster but I ...
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1answer
56 views

Field calculator (using ATAN)

How do I input the arc tan in the field calculator given the values of the fields to get the desired answer, I compare the answer of the manually computed arc tan value and the Atan Spatial Analyst ...
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39 views

Calculate amount of rainfall per grid

I have precipitation measurement data of some points. I calculate the spatial distribution of rainfall using thiessen polygon method with ArcGIS. This shows amount of total rainfall on polygons. How ...
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2answers
47 views

How to populate an attribute table from an interpolation (grid)

I am a novice ARC10 GIS user, with a question on how to add data from a grid file to a shapefile based on an attribute and position. I have a shapefile with fish positions (x,y) and their ...
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2answers
87 views

road density km/km2 calculation

I am trying to calculate the road density in my study landscape. I am using the spatial analyst, and the line density function. By default, the tool is setting a cell size of 3.6km*3.6km, and the ...
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1answer
26 views

Selecting different field in attribute table for kriging in ArcGIS for Desktop?

I have created a shapefile with several columns of data in the attribute table but I can not select any of the columns for a kriging except the 4 required to display (lable, northing, easting, ...
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33 views

Looking for a more effcient process for retrieving information

Using ArcGIS Desktop Standard 10.2. Need to retrieve specific information from multiple (10+) feature classes that are adjacent to/overlap/ or in close proximity to specific areas of interest ...
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1answer
83 views

Creating forest patches from land cover layer?

I have a land cover layer from which I've extracted the tree canopy class and set all values that are not tree to NULL. I've also converted it to a vector and exploded it to make single part features. ...
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1answer
130 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 ...
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1answer
120 views

Flow direction and catchment area polygons for utility water pipes

I'm working on a project where I need to show which direction the water would flow from a water pipe in case there is a pipe burst. I also need to show catchment polygons(area affected). This was ...
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36 views

Determining Euclidean Distance in Polygon using ArcGIS for Desktop?

I would like to ask about how to create an euclidean distance analysis from a polygon shapefile. I got a geology shapefile in which I want to create a "distance from geological boundary" analysis. ...
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26 views

Accessing Spatial Analysis in ArcGIS Online?

I have an ArcGIS Online Organization account but when I click the down arrow next to a layer I do not see the spatial analysis option. How do I get to the spatial analysis? I have watched Esris ...
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1answer
55 views

How to find local maximum using arcgis

I would like to find local maximum with the moving window 3x3 of a raster image but I don't know how to do this. Could you please suggest me the way to do this?
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1answer
126 views

Calculating average NDVI

I would like to calculate average NDVI values. I have 3 values of NDVI: high:243 low:0 high:243 low:0 high:238 low:0 How can I use a a raster calculator to calculate the average valvue
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91 views

How to display the slopes that only facing west using ArcGIS for Desktop?

Here is what I am struggling with ... In ArcGIS for Desktop I have to Derive and symbolise areas considered susceptible to avalanche risk based on the following simple rules: areas with a slope ...
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2answers
76 views

How to calculate percentage of selected area from DEM?

I am working with elevation data and performed a local operation to convert it from meters to feet. I am interested in finding the area (expressed in percentage) that is above 4000 ft, but I have ...
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2answers
27 views

Creating new raster based on spatial extent and classes of one raster and average of another using ArcMap?

I have a raster that is split into classes and I wanted to make a new raster with this raster's spatial extent and classes but displaying the average values from a different raster. I am not really ...
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94 views

How to perform a weighted overlay analysis with categorical classed data?

I have several land use layers (vector polygons) that all contain a field about land use in different classification systems and would like to combine them to a single classification. I would like to ...
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39 views

How to minimize output raster errors using topo to raster tool

TLDR:Is there a way to specify an angle of rotation for an interpolation output based on the angle of input lines? In our line of work, we often create straight line contours that represent a sloping ...
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1answer
102 views

How to calculate average NDVI values for buffers in ArcGIS?

I would need to calculate an average NDVI value for each buffer among everal hundred buffer-areas. The buffer areas are built around observation points. I have all buffer areas in one .shp file and ...
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2answers
97 views

ArcMap Zonal Statistics not producing attribute table

I'm using the zonal statistics in spatial analyst ArcMap 10.2. The input zone is a feature (conterminous US states) and the raster (.tiff - signed integer) is biomass for the entire conterminous US. ...
4
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1answer
142 views

Finding maximum radius of circle within irregular polygon without using ArcGIS Spatial Analyst?

I have a problem which I think could be handled by using the toolset "zonal" / zonal geometry in the ArcGIS Spatial Analyst toolbox. However, I do not have a license for Spatial Analyst, so I am ...
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1answer
46 views

Conversion problem with 'Feature to Raster': resulting Raster not visible in ArcMap

I want to convert a Shapefile consisting of numerous point-features that each represent a specific height in my DEM to GRID-format so that i can then analyze it with Spatial Analyst. Mysteriously, ...
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1answer
45 views

Creating a raster based on a where clause

I am writing a script that deals with a raster that will need a subset of the raster outputted and the rest of the original raster needs to be "no data". To clarify, say, there is a raster and ...
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27 views

Need to run a Groundwater Analysis Based on Points to a Raster

The title sounds daunting, but this task really isn't. I have well samples over a decade in certain locations through an area. These samples contain a value of that element at that point in time. I ...
3
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2answers
94 views

Stitch Bathymetry and DEM data together in ArcMap

I have a question and I would appreciate it if anyone can help me. I have a DEM built from Lidar data and bathymetry survey points for a river which flows on the DEM surface. As you know, Lidar ...
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67 views

ArcGIS Solar Radiation tool says output global radiation raster empty?

I am using ArcGIS 10 with windows7 64 bit on core i7 processor I am working with ArcMap 10 solar radiation tool to create the area solar radiation map. Every time I run the tool it stops after some ...
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45 views

Elevation interpolation along a (sewer) line

Here's what I want to do. I have a vector sewer line feature class that contaings a field for the high invert elevation and one for the low invert elevation. I can turn them into a raster no problem ...
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24 views

Update Raster extent

How do you update raster's extent after you export the raster ? I forgot to enable the Date Frame rather than it's original Dataset ? Thanks.
3
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1answer
38 views

Fast editing in raster calculator — adding lots of images together

I need to add pictures together to make one raster. In one session there are about 150 - 200 images (named randomly - see syntax example) There are about 50 sessions (named randomly) Is there any ...