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

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23 views

Create 1' Contours Using Bare Earth Lidar .XYZI Point Data

I have 42 tiles of Lidar .XYZI point data containing approximately 800,000 points each and i need to create 1' contours out of the data. I have access to ArcMAP 10.3 and the 3D Analyst and Spatial ...
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29 views

Using custom kernel in ArcGIS focal statistics?

Working with ArcGIS 10.2.2. Want to operate with the focal statistics and created my own kernel in xxx.txt. But when I choose "neighboorhood: irregular" the kernel input is greyed out. (Define ...
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19 views

Union or Times for overlaying two maps?

I have created two different raster maps by Kernel density, one for street connectivity density and one for residential units density. I classified each of them in 5 classes with high density, high-...
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20 views

When doing intersect columns are doubled in QGIS?

I am using QGIS version 2.14.1 (Essen). I am the spatial quieries (intersect function). When I do this, I save the new shapefile but it seems that in the new shapefile, the columns have been ...
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1answer
41 views

calculating first quarter of a raster by zonal statistics

I want to calculate the 1th quarter of raster values (beneath polygons) by zonal statistics but it does not have quarter. Zonal statistics has :MIN, MAX, MEAN, MAJORITY,RANGE,.... and does not have ...
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2answers
30 views

Do integer values in a Confidence Raster correspond with a specific probability %?

I have been using the Maximum Likelihood Tool (Spatial Analyst extension, ArcMap 10.3.1) to classify a number of rasters into "Vegetation" and "Bare Ground" classes. I'd like to have some sort of ...
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0answers
70 views

Arcpy code only works when run in two chunks, not as one piece

I have a weird thing happening with my script. When I copy/paste it into the python cmd line within ArcMap, I get error messages. However, if I run the first part, then copy in the very last line by ...
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221 views

Calculating optimal paths between different points using ArcGIS Spatial Analyst? [closed]

How can I calculate all the possible paths between a group of points, taking into consideration the SRTM and the Slope ? I am trying to do this in ArcGIS, my dataset is a group of points (shape ...
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1answer
33 views

Writing for loop for focal statistics?

Im trying to run Focal statistics on a list of parameters, where the radius changes for each input parameter and then save the resultant DTM with the radius attached in the name. I can do this for one ...
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2answers
814 views

Merging multiple SpatialPolygonDataFrames into 1 SPDF in R?

I have created 2 polygons in QGIS. Using them in R, polygons become automatically SpatialPolygonsDataFrame (SPDF). I would like to merge them into single SPDF (as is super easy in ArcGis using Tool ...
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15 views

Interpreting results of ArcGIS Corridor tool?

The output of the Corridor tool of ArcGIS 10.1 (see picture below) is created using two inputs of the Cost Distance tool for two different sources - in this case habitat for giant pandas North of ...
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2answers
378 views

Extracting multiple values of raster to polygons using ArcGIS for Desktop?

I was hoping I could get some help on how to extract information from a land use raster using polygons. I have a layer with 157 polygons and a land use raster with multiple land use categories for the ...
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27 views

Arcpy standalone script: Tool is not licensed error [closed]

I'm trying to execute a standalone python script using arcpy and spatial analyst extension. I've arcmap installed with a trial license. The script is the following: import arcpy,arcinfo import sys ...
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3answers
94 views

Unlocking 3D Analyst and Spatial Analyst Tools with ArcGIS Pro?

If I buy ArcGIs pro, do I need to buy Spatial Analyst and 3D Analyst extensions seperately? Or do they come free with the package?
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21 views

Executing Power Equations in Raster Calculator?

I am attempting to conduct a calculation in raster calculator, however I am coming up with numbers that I know are incorrect. The equation I am attempting to execute is as follows: 84.146e-.00006x ...
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1answer
39 views

Extracting raster value to specific range using ArcPy?

I have multiple rasters with range 0 - 255. I want to extract range from 0 to 100 using Arc GIS python script and after extraction I want to multiply all raster by 0.01 and save it with same name as ...
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1answer
27 views

Calculating difference between two rasters using ArcGIS for Desktop?

I'm using ESRI Desktop 10.2 with a spatial analyst extension. Can Spatial Analyst be used to calculate the difference between two water level raster files, or do you have to use 3D Analyst?
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17 views

Identifying cliffs or clifflines?

I am looking for a way to accurately identify cliffs or clifflines. I have used the slope and reclassified for only high areas but wondering if anyone else has found a better way.
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1answer
335 views

Compute separate Zonal Statistics table for one raster, zones are many polygons in shapefile

Seems earlier ArcMap versions made this possible: I have one raster (pixels are landcover classes) and a set of buffers stored as multiple polygons (possibly overlapping) in a polygon shape file. ...
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2answers
30 views

How to find out the density or percentage of vegetation in each aspect

I am trying to find out what is controlling vegetation in an area of Saudi Arabia for my masters project and I am currently focusing on the aspect of slopes in the area. I have a DEM layer and I have ...
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2answers
35 views

ArcMap raster calculator raising negative values to a power

I have a raster calculator expression: Power("dataset.tif",1.5) where dataset is float, and has some negative values. When I run this expression in raster calculator, all of the negative values ...
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0answers
14 views

Delineate Built-Up Areas not working

I have been experimenting with the Delineate Built-Up Areas tool in ArcToolbox and have been unable to get it to properly work. The tool works properly without giving error messages, however I get an ...
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1answer
41 views

Inserting rectangle in order to surround certain area (few raster cells) using ArcGIS for Desktop?

I´ve done a suitability analysis and now I need to point to this certain area. Is it possible to select and frame certain raster cells to enlighten those? Or can somebody explain how to insert a ...
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2answers
850 views

Running ZTV (ZVI) on ArcGIS Desktop for 3m high object?

What tool in the spatial toolbox would you use to run a ZTV (ZVI)? or is there a better way of carrying this type of query out using ArcGIS 10? Also what other information would I need to do this ...
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11 views

Reclassifying certain parts of raster layer for use of Cost Distance?

I have a raster that shows different areas of habitat suitability for a species - highly suitable, suitable, marginally suitable and unsuitable. I would now like to use the Cost Distance tool to ...
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0answers
11 views

How to change the raster cell values where they overlap with the cells of another raster?

I have a raster that I'm trying to edit by changing the value of select cells (those that overlap with the cells of another raster). For some context, what I'm trying to do is create a Distance to ...
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63 views

Performing Viewshed Analysis in ArcGIS?

I have a series of observation points with heights specified within a long-integer type field. Points and DEM are in the same coordinate system. When I run the Spatial Analyst - Viewshed tool, the ...
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2answers
226 views

Is r.cost equivalent to diffusion interpolation with barriers?

I want to perform interpolation using cost distances rather than euclidean distances similar to Greenberg et al. (2011). In that paper they use r.cost in GRASS to compute cost distances for each ...
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1answer
31 views

Trying to Run Slope Analysis Script

I'm trying to make a slope raster from a lot of DEM`s. The DEM rasters are in this file Geodatabase C:\Bachelorarbeit\Daten\GIs\Originale\dtk25_dgm1.gdb The slope raster should be saved in this ...
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2answers
23 views

Raster multiplication script not executing

I built this code to multiply rasters but it will not execute, it gives me the following error: ERROR 000732: Input Raster: Dataset in_raster1 does not exist or is not supported # Import arcpy module ...
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1answer
1k views

Why does CON statement give ERROR 010240: Could not save raster dataset to (value) with output format GRID?

I am receiving the following error when trying to run the following code: import arcpy from arcpy import env from arcpy.sa import * arcpy.CheckOutExtension = "Spatial" env.workspace = r"C:\...
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1answer
4k views

What does “You do not have necessary license to run tool” mean when ArcGIS extension installed and activated?

I just purchased ArcGIS for Home Use 10.2 and installed and activated the extensions with the codes I received from Esri. The ArcGIS Administrator says Yes for Installed and Authorized, and even has ...
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1answer
33 views

Smoothing grid of cells inSrcGIS for Desktop?

I have a grid of cells that outline sharp transitions between different neighbour values: I would like to "smooth" the transition between the cells so that I obtain some sort of gradients between ...
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0answers
21 views

Extracting pixels with value in one raster but NoData in other raster?

I have two raster A and B, and they are representing the info for Florida. Ideally A and B should have same coverage. However, due to some data processing issue, B's boundary is a bit smaller than A's....
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423 views

How to compare outputs of erosion from ArcSWAT and RUSLE from ArcGIS?

I calculated water erosion in ArcSWAT and I also calculated erosion by RUSLE http://35.8.121.139/rusle/ equation in ArcGIS. Now I need to compare these two (from ArcSWAT I used SYLD- assumed ...
3
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1answer
33 views

Error when running Extract by Mask Script

I am using ArcGIS 10.3 Desktop to write a script tool to, among other things, extract raster data using a mask. I keep getting these errors: ExecuteError: ERROR 000875: Output raster: C:\...
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4answers
4k views

“Extract by Mask” changing raster pixel values…or not?

I am using ArcMap 10.0 and am confused by my Extract by Mask output rasters. I hope to eliminate the black background from three Landsat ER Mapper images so that I can mosaic them. Originally I ...
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1answer
28 views

Removing pixels in raster map using ArcGIS for Desktop?

I made a raster. I wonder how can I remove pixels with values lesser than an specific value? for example How is possible to set the value of classes from 0.92? i have searched it and i found this ...
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1answer
826 views

How to create backlink raster for Cost Distance tool?

I have two polygon shapefiles and one cost surface. I need to estimate accessibility to these two sets of destinations. The part that I don't understand is whether I have to use an output backlink ...
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21 views

how to do classification when the spatial analysis toolbox is not available?

I am required to do classification on a polygon feature class based on the rage data. However, I have realised that our ArcGIS lisense does not have "Spatial Analysis" toolbox as active, therefore I ...
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52 views

Working out percentage of different raster parcels in polygon?

I have a raster layer (LCM2007) that contains 24 classes of landcover and a shapefile, polygon, which represents areas in a survey. I want the area, or percentage, of each class in each area. For ...
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7 views

What does Geostatistical Analyst use to export to vector

I have three maps I need to create and two can be created in GA while the third needs to be created in Spatial Analyst but would like all three to have a similar appearance. When I use Inverse ...
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13 views

Querying points based on multiple gdb-based layers?

I have several dozen different gdb data sets that collectively make up the areas that I'm looking at in QGIS. I have two additional shapefiles with points and I need to figure out which of those ...
3
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1answer
66 views

Calculate visibility with polygonal visual barriers

I have the raster file for my digitial elevation model as well as a polygon shapefile with polygons representing different kinds of environments (forest, field, meadow, etc), and wouldlike to ...
5
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3answers
434 views

Recommend text for Spatial Analyst? (ArcGIS)

Does anyone have a recommendation for a good reference/tutorial(s) on Spatial Analyst? The most recent I can find are from early to mid 2000s. Or has SA simply not changed much in 7 years?
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1answer
1k views

ArcMap 10.1 - Tabulate Area tool “doubling up” for Overlapping Buffer Zones

This question is related to a previous question I asked: Raster Version of Spatial Join (one to many) I used the Tabulate Area tool to crosstabulate values between an overlapping "buffrast" raster (...
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29 views

Using land cover data and a polygon layer to identify areas of interest

I have land cover in a raster file and a polygon layer with park boundaries. I need to take 2 of the land cover categories (trees, brush/shrubs) and look at areas with this type of cover that are ...
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0answers
20 views

Interpreting output from PCA tool of ArcGIS for Desktop?

I am looking for some assistance on interpreting the output from a PCA run in Arcmap. My data is comprised of 6 raster bands representing biophysical elements in the marine environment (SST, ...
2
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1answer
43 views

Averaging large number of raster layers using ArcGIS for Desktop?

I have a large number of rasters (300+) I would like to average using Raster Calculator as is explained at How do I average a set of rasters? I know I can manually select each raster by double-...
5
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1answer
4k views

Averaging set of rasters using Raster Calculator of ArcGIS Desktop?

How do I average a set of rasters? I have remotely sensed chlorophyll a rasters for several days and I need to get an average of the days represented as one raster layer. I am using ArcMap 9.2.