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

learn more… | top users | synonyms

2
votes
0answers
22 views

Pixel based Regression

I have 80 .tif files, and each pixel value represents NDVI. The whole stack of images is a time-series. I want to run a regression for each pixel using NDVI and time. I have tried to approach this ...
0
votes
0answers
36 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 ...
0
votes
1answer
27 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 ...
0
votes
0answers
20 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-...
0
votes
0answers
21 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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
0answers
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 ...
1
vote
0answers
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 ...
1
vote
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?
0
votes
0answers
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 ...
0
votes
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 ...
1
vote
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?
-1
votes
0answers
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.
1
vote
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 ...
2
votes
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 ...
1
vote
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 ...
1
vote
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 ...
0
votes
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 ...
1
vote
0answers
64 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 ...
0
votes
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 ...
0
votes
0answers
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 ...
1
vote
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 ...
1
vote
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....
1
vote
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 ...
3
votes
1answer
34 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:\...
0
votes
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 ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
1
vote
0answers
21 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
votes
1answer
44 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-...
0
votes
0answers
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 ...
0
votes
0answers
14 views

Using Extract Multi Values To Points to return OBJ ID not actual attribute values?

This code extracts the OBJECTid from the rasters. Is there a way to obtain the actual attribute values? EMVTP (http://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/extract-multi-...
0
votes
1answer
20 views

Cropscape Change Analysis

I have two raster data layers from cropscape for 2014 and 2015 that have been clipped to Fresno County. I want to look at the change in almonds between these two years (if and where almonds were added ...
0
votes
1answer
23 views

Time distance by roads from specified point (raster analysis)

I just started to learn arcgis, so even simple tasks looks difficult to me. Can you give me please some guidelines how to create raster where each cell contains time distance by road from specified ...
0
votes
1answer
112 views

How to Calculate NDWI Value in Arcgis 10.1?

I want to delineate surface water feature of my Landsat raster image and also want to calculate the area of water body. I have learned through internet that NDWI can be used to delineate open water ...
3
votes
0answers
39 views

How to examine each connected pixel to select its neighbors to separate clusters?

I am trying to develop a methodology for separating pixels from one another to determine whether they belong to a city cluster or not. Starting at the center pixel of the city I want to select all ...
2
votes
0answers
18 views

Determine which Polygon Attributes are the Majority Value as Defined by Second Polygon Shapefile

I need to determine the majority soil type within a series of polygons. I have data from the USDA Web Soil Survey (properly formatted and the like). I then have another shapefile with 60+ polygons ...
1
vote
0answers
35 views

Tool to count faulty point-curve connections and number of missing connections [closed]

is there any tool in arcgis/arcmap that shows faulty point-curve connection? For example two roads should be at "+" intersection, but they are not? And second- number of missing connections due to ...
1
vote
0answers
15 views

Surface attribute only calculated for actual points and not interpolated

When I run the surface hillshade, slope and aspect in the Arc Toolbox using my raster surface it appears to be calculating the attribute only for the data points and not for the interpolated areas ...
0
votes
0answers
22 views

Creating logical function in grid using con tool?

I have a precipitation grid with values but no attribute tables. How do I redefine the precipitation such that I can create a logic operation by condition con for e.g. a) P= 400 for P<=400 b) ...
1
vote
0answers
54 views

Thinning LiDAR points to remove redundant neighbors?

I'm trying to develop a workflow in ArcGIS with 3D Analyst or Spatial Analyst to intelligently thin a grid of spot elevation points created from a LiDAR DEM. The current point spacing is 1 meter. Some ...
0
votes
0answers
26 views

Raster result is different for arcpy.sa CON and arcpy.gp.Con_sa

I have to add two rasters, one bigger than the other, but before adding I have to set the value of NODATA of smaller raster to the value of bigger raster. So i used the following code to do it: ...
0
votes
0answers
13 views

Why ModelBuilder results do not display in map? [duplicate]

I am automating river network analysis using ModelBuilder by making a tool out of the different Hydrology Spatial Analyst Tools extension. When run individually, each tool in the set of tools has an ...
0
votes
0answers
22 views

Identify adjacent and no-adjacent polygons between multiple shapefiles using R?

My spatial data are recorded multiple years, providing one polygon for a year. (Polygon is derived from raster data, so I can use rasters instead if it will be easier to run my calculations). I ...
0
votes
1answer
43 views

Selecting polygons below (downhill of) lines using ArcGIS for Desktop?

I am hoping to identify sections of a trail system which are close enough to potentially add sediments to wetlands downhill. To this end, I would like to select polygons (wetlands) that are within a ...
0
votes
0answers
19 views

Focal statistics on polygon data

I am new to GIS and I am currently preparing/extracting my spatial data to prepare for analysis in R. At the moment, I am attempting to calculate 'summed cover of my predictor variable (i.e. ...
5
votes
1answer
73 views

Nested Con statement arcpy

I am trying to combine three conditions into one con statement line: ndvi_adjusted = Raster(ndvi_raw) * 0.004 - 0.08 con1 = Con(Raster(ndvi_adjusted) >= 0, ndvi_adjusted) con2 = Con(IsNull(con1), ...
1
vote
0answers
56 views

Getting distance from nearest stream and elevation to nearest stream?

I need to know if there are simple commands for this 2 points: the distance from the nearest stream, D [m], defined as the length of the path that hydrologically connects the location under exam to ...