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

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2
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0answers
36 views

Watershed tool producing same output as basin tool for all pour points [closed]

I am using the Hydrology Tools in the Spatial Analyst Toolbox (ArcGIS 10.3) I am trying to delineate watersheds in a region in order to do spatial interpolation by top-kriging at some ungaged sites. ...
0
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1answer
25 views

Manually changing/suppressing z-values in Spline with Barriers interpolation that are known to be erroneous?

I've included an image of a project I'm working on. There are two layers representing sub-surface geologic formations, and these were generated using elevation borehole data (so, point data), to ...
0
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1answer
20 views

Calculate zonal statistics with two different types of zones (provinces and longitude*latitude grid boxes) in ArcGIS?

I am trying to get zonal statistics in ArcGIS with two different datasets. One is a world map with zones defined as "provinces (such as the US states)" and the other is a temperature dataset with ...
1
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2answers
67 views

Getting similar IDW results using Spatial and Geostatistical Analysts for spatial interpolation of data with many zeros?

My data are plant biomass data from hundreds of sites. Most sites have zero biomass; these zeros are real. Thus, my data violate most assumptions of geostatistical interpolation methods (confirmed ...
1
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1answer
60 views

Combining information from multiple rasters into aggregate raster and populating fields accordingly

I am stuck on how to best combine the information from multiple rasters into one raster. Specifically, I am working with a time series of raster files, whereby each raster corresponds to a different ...
1
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1answer
36 views

Partitioning value (100 tonnes/ha) of underlying shapefile to multiple features in same shapefile in areas that overlap using ArcGIS for Desktop?

I have tried searching for an answer but can't think of a way to generalize my question to other scenarios. Looking for answers using ArcMAP 10.1. I currently have two shapefiles. One contains ...
0
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1answer
52 views

Full list of objects not showing up after using Zonal Statistics as Table tool?

I am using the Zonal Statistics as Table tool in ArcMap 10.1 to compute the sum of raster cell values (brown scale in below image) in a given set of polygons (red in below image). For an unknown ...
1
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1answer
58 views

Calculating Geometric Mean in Raster calculator

I am calculating Geometric Mean for land degradation mapping. I am applying following formula in ArcGIS 10.2- ("GW.img" * "LULC.img" * "Rain.img" * "Temp.img" * "Wind.img" * "NDVI.img" * "Livestock....
4
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0answers
71 views

Cell Statistics standard deviation values incorrect

I'm having some issues with the Cell Statistics tool in a python script I am writing. I am using 30 years worth of global cumulative annual rainfall data as input and am getting strange values in some ...
0
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0answers
38 views

Trouble shooting Incremental Spatial Autocorrelation/Hot Spot Analysis

I'm trying to do a spatial analysis of rural school closings in Brazil (ultimate objective to do OLS/GWR). I have census data from 2005 and 2014, from which I've calculated the relative percentage of ...
1
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1answer
38 views

“Extract by Mask” saving output as temporary file, instead of saving it in specific directory. How to remove this error?

I am using ArcGIS 10.0, while using ExtractByMask in arcpy output file is being stored as a temporary file, though the same file appears in the designated directory but it's status is temporary, which ...
0
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1answer
64 views

Con statement in raster calculator Arc GIS 10.3

I have four rasters (A, B, C, D) based on which my classification works. The con statement I have been using is posted below. My problem is when A_01 is 2. Area when A=2, if value of B is less than ...
1
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1answer
49 views

Getting 'module' object has no attribute 'ExtractValuesToPoints_sa' error in ArcPy while extracting values to points?

I am using ArcGIS 10. I am trying to extract values to point using ArcPY but getting error as Runtime error : 'module' object has no attribute 'ExtractValuesToPoints_sa' Below is what I am ...
1
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1answer
57 views

Script to “extract by mask” a list of raster files and list of mask

I'm new to Python so sorry for maybe trivial question esta, I have four Landsat images and each image with an area to extract by mask. How can I make this script? I've tried with this script doesn't ...
3
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0answers
72 views

Get counts in grid cell for multiple values

I have 500+ polygon shapefiles with nationwide coverage. Each shapefile has possible record values of 0-4. I want to get the value that intersects each grid centroid and then get a total count for ...
0
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0answers
19 views

Elevation data from floating point DEM in ArcGIS for Desktop? [duplicate]

I have acquired a DEM from local municipality. It is a float point DEM, and the elevation of each pixel is represented as simply "pixel value". What would be the correct work flow to convert this to ...
0
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1answer
42 views

How to prepare Rainfall erosivity map [closed]

I am trying to develop rainfall erosivity map over a study area using 30yrs period rainfall data. i have determined the rainfall erosivity R for each year, how do i use this to prepare a map showing ...
1
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2answers
58 views

Extract raster values around point features with kernel

I have a point layer of known landslide locations, and a raster layer (30m) of vegetation cover (categorical). My goal is to extract the prevailing raster value around the point locations. Almost all ...
2
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0answers
26 views

Using “snap pour point” to find a watershed of specific area starting from a point

I am trying to find everything downhill of a certain point in order to create a watershed of a specific area. For example, say I have a point at (x,y), and I'm interested in creating a watershed ...
1
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1answer
57 views

ArcGIS Focal Statistics Returns Out-of-Bounds Result

I am trying to compute a moving window maximum on a raster, such that the output is the max within a 5 mile radius. This should result in an output grid where the maximum is equal to the maximum of ...
1
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1answer
54 views

Viewshed analysis without observer point?

I want to find the most visible point within an area.. I don't have an observer point, I want to find it. based on the highest points, I've created scenarios and compare.. However there might be an ...
2
votes
1answer
153 views

Doing spatial correlation between two layers on ArcGIS?

I have two datasets and I'm trying to determine the extent of their spatial relationship. I suspect they are closely related but I would like to produce a map output to illustrate this relationship. ...
1
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2answers
165 views

Determine rasters particular area's within ranges using python

My directions: Create a script that determines what areas meet the following conditions: Moderate slope — between 5 and 20 degrees Southerly aspect — between 150 and 270 degrees Forested — land ...
1
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1answer
275 views

How to calculate the average raster value for an area in ArcGIS?

I have Raster data for a country which has Evaporation Data in its pixels. I also have Vector layer which has the 30 cities of the country. What I need is the average Evaporation value of each city ...
2
votes
1answer
32 views

Can I use Mapbox to create a web form that finds parks near a location?

I have run a network analysis in ArcGIS and have all of the trimmed polygons along roads within a half a mile of a park. I need to find a way to create a web form that takes in an address and spits ...
2
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1answer
42 views

Find distances between points through a raster

I have a set of 79 points located overlaid on a raster that defines distance through coastal waters: each cell equals 100 metres, with NoData for coast and islands. I can use this raster to create ...
1
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0answers
75 views

Creating Fence Diagrams from Electromagnetic (EM) Conductance Survey

I am looking for some help with creating fence diagrams in GIS for Electromagnetic Conductance surveys. I have points along a line that represent sample locations with three different depths (readings)...
2
votes
1answer
167 views

ArcMap crashes when opening extension folder?

I need to activate the Spatial Analyst extension, however each time I select "extension" ArcMap 10.3.1 crashes. This is what I'm doing: while in ArcMap, I navigate to Customize/extension then the ...
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 ...
0
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0answers
37 views

Error 010422 when combining rasters

I have 17 rasters, some of which overlap one another. I wish to combine them such that where the rasters overlap the sum of their values is taken. I have tried combining them using raster calculator, ...
1
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1answer
30 views

How do I extract elevation data from a DEM using points I have in a CSV?

So I have a CSV with a lot of fields. The first 3 fields are the ID, longitude, and latitude. I have already converted to decimal degrees, and said to display XY data. (Is there something else I need ...
0
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0answers
11 views

Raster classification based on different attribute? [duplicate]

I have a raster based on value, I want to convert it into another raster based on a different attribute for e.g. area, what is the function?
1
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1answer
59 views

Calculate the frequency of classes of neighbouring raster cells

I'm struggling with a problem when working with a raster dataset of biotope types: For each cell I would like to find out the frequency of classes in the adjacent cells, e.g. from the 8 neighbouring ...
1
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1answer
67 views

Calculating watershed using snap pour points?

I am trying to calculate a watershed layer and have followed instructions from this previous question: General steps to create watershed boundary I have combined all these steps and run it as one in ...
1
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0answers
52 views

How to calculate spatial GINI coefficient for land use

I am interested in calculating an index of agricultural land inequality for Brazil. I'm thinking that a GINI coefficient would be a good approach given traditional uses of GINI. I have a data set for ...
0
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2answers
42 views

CellStatistics is not defined error

Code : >>> import arcpy >>> ras1 = arcpy.Raster(r'D:\IMD\test_converted1961.img') >>> ras2 = arcpy.Raster(r'D:\IMD\test_converted1961_fliped_ud1.img') >>> result = ...
1
vote
1answer
254 views

Script Error 'Invalid Pointer' in Spatial Analyst Tool [duplicate]

I have ArcGis 10.3 (previously 10.2 version) running on Windows 10 (previously Windows 8). My GIS licence is provide by my company where I have an intership, so I can't just uninstall/install back the ...
1
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0answers
86 views

con statement outputs using arcpy.sa.Con doesn't ignore NoData

In ArcGIS 10.2, using the Con tool, I ran a conditional statement to return RasterA where RasterB value >0. That worked fine. Transferring the code into python, the statement reads something like: ...
2
votes
2answers
58 views

I have slope raster and that is categorized with slope in percentage(%) but my script not successful

I have slope raster and that is categorized with slope in percentage(%) my condition is if slope <= 1 then m = 0.2 1 < slope <= 3 then m = ...
0
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0answers
7 views

Changing raster values in ArcGIS for Desktop? [duplicate]

I'm performing a water outflow analysis in ArcGIS. I have converted a Polygon and a Line to a raster (surface and streams). Now i want to change the values in these rasters so the water pixels have ...
1
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2answers
186 views

Extracting multiple Subdataset from hdf files to geotiff format using ArcPy?

I have 165 hdf files(monthly data) of EVI(Enhanced Vegetation Index) , I need to convert them to a geotiff format. In ArcMap 10.1 I can only extract the data one file at a time. I have this python ...
0
votes
1answer
51 views

Filling raster gaps in ArcMap based zone layer?

I have the following raster layer that has data gaps. I can use focal statistics to fill them: Con(IsNull("raster"), FocalStatistics("raster", NbrRectangle(5,5, "CELL"), "MEAN"), "raster") However, ...
2
votes
2answers
120 views

Average value of polygons within a set distance from a point

I have two vector layers: one polygon and one point layer. The polygon layer has a value from 1 to 10. I am trying to find the average value for all polygons within or partly within a 1-mile radius of ...
3
votes
1answer
85 views

ArcMap Spatial Analyst - Kernel Density Estimation Produces Blank Rasters

My problem is with the Kernel Density operation in Spatial Analyst. ArcMap produces blank rasters for some reason when given a normal point feature class as input. I had no problem creating the ...
0
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0answers
16 views

arcgis extensions for GWPCA [duplicate]

Dose anyone knows if there is any toolbox or extension for calculate GWPCA (geographic weighted principal component analysis) in arcgis ? I know there is package for that in R but i dont know anything ...
1
vote
1answer
88 views

How to handle temp files created during Extract by Mask (Spatial Analyst)?

I have three scripts running simultaneously that processes raster data in several directories. The problem I am encountering is that ArcGIS is creating a temporary grid file called 'Extract_recl1' ...
0
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0answers
54 views

Raster Calculator subtraction giving wrong difference

I'm performing a pretty simple subtraction: The values of the resulting raster are correct for some pixels: But many pixels are calculated wrong: Which settings do I have to change to get ...
1
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1answer
21 views

appending country names to route feature class

I have a polyline feature class made up of multiple segments. This feature class overlays a polygon feature class representing the countries through which this polyline is going. For each segment, I ...
4
votes
1answer
40 views

Figuring out if points are the same in FME

So I am working on a project using spatial point data in FME. Both files contain 500 points and the hope is they are all the same. To figure out if any are different I was thinking of using ...
1
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0answers
48 views

Zonal histogram script VALUE row suffix problem

I'm running 2 Python scripts. The first it is to apply Zonal Histogram to several rasters. The second it is for saving the Zonal Histograms to a text file. My problem is when the first script creates ...