1
vote
1answer
28 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 ...
3
votes
2answers
41 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 ...
1
vote
0answers
27 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 ...
4
votes
1answer
45 views

What special values can be included in the Con tool's conditional statement?

I recently read an answer to this question, which used a rather creative solution involving ArcGIS's Raster Calculator. The part that I was most interested in was that the solution's conditional ...
4
votes
3answers
55 views

Converting raster file from float to integer type in ArcGIS for Desktop?

I have a float type raster file (an NDVI made from ERDAS IMAGINE) and would like to convert it to an interger type raster file in order to use Focal Statistics function (Majority). Is there any way to ...
2
votes
0answers
34 views

Merge Raster Layers with Raster Calculator

I am looking to merge three raster layers together, we are only allowed to use the Raster Calculator tool in Spatial Analyst, ArcToolBox. Using ArcMap 10.2
3
votes
1answer
26 views

How many A features that fall both in the B polygons and C polygons are for each C polygon?

I have this apparently complex problem for solving in ArcGIS: Practically, I need to get the number of all yellow polygons that fall within both the green polygons and the red polygons. I need this ...
4
votes
1answer
56 views

Question about ArcGIS vs. QGIS for kernel density estimations

It appears from the QGIS documentation that the Heatmap Plugin can generate a kernel density surface from a point map and make use of the attributes of the original points to influence this surface ...
6
votes
2answers
129 views

What is the Pick tool in ArcGIS's Spatial Analyst commonly used for?

I have recently encountered the Pick tool in the Spatial Analyst of ArcGIS. I understand what the tool does; it creates an output raster using a list of input rasters and a 'position' raster which ...
2
votes
1answer
66 views

Calculating NDVI using Landsat ETM+ band values

I have sample points (shape file converted from a .xls file which contains XY coordinates,nnx,nny and canopy density) and a landsat etm+ image. First I applied 'SpatialAnalyst Tools>Extraction ...
2
votes
2answers
45 views

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

I'm trying to compare two rasters, and create an output based on a formula like: if raster1 > 10 or raster2 < 20 then raster3 = 30 How can I specify the OR in the raster calculator's CON ...
2
votes
0answers
23 views

Characterizing territory according to its relief using ArcGIS Desktop?

I want to characterize the territory according to its relief with ArcGis 10. I'm trying to define a wide territory by its relief, but I would like to do it in an automatic or semiautomatic form with ...
0
votes
3answers
28 views

Capabilities of the Analytical Hierarchy Process (AHP) in conjunction with the weighted overlay tool

I am making a prospective map of fossil deposits using the "Weighted Overlay" ArcGIS tool. Input factor rasters are mostly topographic in nature (elevation, roughness, TPI, etc). Initially, I had ...
2
votes
0answers
43 views

Comparing two kernel density rasters for areas of interest?

The background to my question is that I have unit sales for Product A aggregated by city. I also have unit sales for Category A aggregated by city. The goal is to compare areas where Product A ...
0
votes
1answer
24 views

Calculating area of solar radiation using ArcGIS for Desktop?

How can I obtain area solar radiation using ArcGIS for Desktop? I am open to any kind of suggestion as I want to give it a try.
1
vote
1answer
39 views

ArcGIS Raster Calculator output raster has one band but cannot build attribute table?

I built a raster using the raster calculator of ArcGIS 10.1 for Desktop. The properties of the output raster ("usle_1") indicate that this raster has one band. There is no attribute table but I ...
1
vote
2answers
36 views

Get raster expression

In Arcmap I have made a new raster with ArcToolBox -> Spatial Analyst Tools -> Map Algebra -> raster calculator. Now, months later, I have forgotten the source formula expression. How can I ...
1
vote
1answer
41 views

How to create the attribute table for a raster that was produced by the Slope Tool (ArcGIS10)?

I use the Slope Tool (Spatial Analyst Tool – Surface) of ArcGIS10 by ASTER GDEM (that was exported to UTM projection). The program produce new raster (with slope value), but the resulting raster ...
-1
votes
1answer
32 views

How to create a buffer from a click on map on ARCMap

I'm searching a way to creating a buffer of a specified radius starting froma a click on the map.
1
vote
2answers
50 views

Why does arcpy.sa.Sample give TypeError: Sample() takes at least 3 arguments (3 given)?

I'm building a script where I'm taking a standardized CSV that one of our data processing packages consistently exports and turns it into a z-aware shp after running through Sample as well. Along the ...
3
votes
0answers
35 views

Cost Path: multiple pairs of sources and destinations

I have seen many questions related to this problem but very few answers. I am very new to scripting and using ModelBuilder, but I am trying to calculate the cost path for 200 polygons with a single ...
2
votes
1answer
36 views

Raster statistics along polygon edges

I would like to summarize raster statistics along the edge of each parcel/polygon in a shapefile. For each parcel shown below in yellow, I would like to calculate the average, min and max value of ...
0
votes
1answer
75 views

Combining two overlapping rasters (combine cells, retain both values) using ArcGIS for Desktop?

Using ArcGIS 10.2, I am trying to combine two rasters which are identically overlapping in shape and extent, but with different values and counts. As an end result I would like each cell to retain ...
0
votes
3answers
54 views

Error in Conditional Tool of ArcGIS for Desktop?

I am trying to extract stream raster from a flow accumulation raster using Conditional Tool in Spatial Analyst. Here's my input: Input Raster: FLOWACC.tif Expression: Value >= 3.5 True Raster: 1 ...
1
vote
0answers
46 views

CostPath gives error for specific points?

I am using the tool CostPath. As an input feature destination data I've entered several points (no specific value, just distributed geographically), and as the cost distance raster I've entered the ...
2
votes
1answer
59 views

ArcGIS Viewshed without Observer Points

I want to create a viewshed around a LineFeature. The problem is, I have no observer points. I would like to create them with a gap of 10m around the line feature. The LineFeature should be 1m over ...
2
votes
2answers
55 views

Arithmetic on rasters with variable names in Map Algebra/Spatial Analyst?

I'm a Python (and StackExchange) novice trying to figure out how to perform calculations on temporary rasters with variable names. My attempt at a minimum working example is below, but I would ...
1
vote
0answers
35 views

Error issues when using Cut Fill operation in ArcGis 10.2

I wonder if someone is able to assist with an issue I have about a series of errors I get when using the cut/fill tool in spatial analyst, ArcGis 10.2? Someone posted a question sometime last year ...
2
votes
3answers
80 views

Zonal Statistics as Table Tool

I have a slope dataset. I have a polygon shapefile with territory within the extent of the slope map. I have to calculate the real surface area of this shapefile using the zonal statistics as table ...
1
vote
1answer
108 views

Calculating real surface area using Zonal Statistics as Table Tool?

I have a slope dataset. I have a polygon shapefile with territory within the extent of the slope map. how do I calculate the real surface area of this shapefile using the zonal statistics as table ...
1
vote
0answers
27 views

Calculating average raster values around set of points using ArcGIS for Desktop (or R)? [duplicate]

I have a 30-m elevation raster as well as a set of points that overlay the raster. For each point, I want to calculate the average elevation within a 5-km radius of the point. One way I was ...
2
votes
0answers
33 views

ArcMap - proportion of polygon in lon/lat grid cells

I have a polygon representing a river basin on a 1 X 1 degree lat/lon grid. I need to create a boundary using the grid cells as the boundary to best represent the outline of the basin. I would like to ...
0
votes
1answer
54 views

Error with the Contour (Spatial Analyst) tool in ArcGIS

I am having an issue with the Contour (Spatial Analyst) tool in ArcGIS. When I manually run the tool in ArcToolbox, it will sometimes say that the tool has failed, giving the following error message: ...
0
votes
0answers
19 views

How to Krige with expectation of 0

I am trying to Krige in ArcGIS from point samples of a chemical concentration. Towards the center, most of the points are larger, and on the periphery, all of the points are 0. The generated raster ...
2
votes
1answer
233 views

calculating zonal statistics of raster data in multiple overlapping zones and combining them into one table

The aim here is to calculate the max, min, mean, range, sum, count and std of raster data contained in areas delimited by polygons (much like what the Zonal Statistics as a Table tool from Spatial ...
1
vote
2answers
41 views

Feature Distance for each Raster Cell

I have a polyline layer of roads and a raster of land ownership. For each raster cell I would like to calculate the distance to the nearest road. I am on ArcMap 10.2 with Spatial Analyst and 3D ...
0
votes
1answer
37 views

Raster data with no values (ArcGIS)

Used a DEM raster and then used the extract-by-mask feature to shrink it to the shp file I'm working with. However, when I try to get unique values, it gives me the following error message: "The ...
0
votes
0answers
54 views

Choosing appropriate Interpolation Tool

I am interested in doing some fairly simple interpolation work in the next few weeks using ArcGIS 10.1. However, I am unsure about which interpolation tool is most appropriate for the task at hand. ...
3
votes
1answer
67 views

How can I create a constant slope DEM?

I wanted to create a DEM of constant slope say 1/3000. How can I proceed in ArcGIS 9.3? The area may be 1000m x 1000m or any other as per convenience.
1
vote
0answers
31 views

Trying to combine 29 zip code service areas into 10 or fewer service areas

I am tasked with coming up with 10 or fewer zip code service areas based on 29 pre-existing zip code service areas. The zip codes cover 5 counties and many service areas, obviously, overlap. The ...
1
vote
1answer
58 views

Why is my spatial join count 0 in ArcGIS Desktop?

In arcMap, I have a list of locations with lat/long. From a previous post, I learned about the Spatial Join tool to determine the amount of joins that I have. I tried to use the tool with my states ...
0
votes
0answers
60 views

What is GDAL equivalent to ArcGIS Lookup (Spatial Analyst) tool?

I use the Lookup (Spatial Analyst) tool to create several raster layers from a combined raster layer. I know ArcPy can do the same thing. However, I would like to know whether GDAL (or another ...
1
vote
0answers
102 views

How to extract NetCDF raster values to time enabled shapefiles?

Does anyone know a good way to extract NetCDF raster values to each data point from a time enabled shapefile at the correct time? I have tried using a python script tool and a loop that steps ...
0
votes
1answer
123 views

Extracting NetCDF raster values to time enabled shapefiles - what's wrong with my python script?

I'm trying to make a python script tool that extracts the values from a NetCDF raster to each data point from a time enabled shapefile at the correct time. My NetCDF raster consists of monthly sea ...
5
votes
2answers
53 views

Compare slopes between adjoining line segments

Using a DEM, I assigned slope values to individual segments in a street network feature class. In some areas the slope values seem suspect, such as where a highway overpasses a local road. Is there a ...
0
votes
1answer
29 views

Contouring surface with barriers?

I'm using ArcGIS Desktop 9.3, and I want to contour a surface with barriers. Every time the result is a polyline contour shape file which covers only a part of the surface not the whole surface. ...
2
votes
2answers
48 views

How do I create zones using location features? [closed]

I have a list of rock art sites with a recording of every image within each site. For example, Site 1 has 4 kudu, 1 lion, 3 males and a locust; Site 2 has 2 leopards, 1 elephant and 3 giraffes; Site 3 ...
1
vote
0answers
30 views

ExtractByMask with one mask and multiple layers ArcMap

I have a multiple cost distance rasters and multiple feature layers. I need to find and join the feature layers (or associated shapefiles) that lie within a threshold of costs on the cost rasters. For ...
1
vote
1answer
35 views

Aggregate the raster from the Combine Tool in Spatial Analyst--->Local

I have a raster file created through the Combine tool (Spatial Analyst--->Local). The attribute table is showed below. Its resolution is roughly 10m. I would like to aggregate it to 50m with each ...
1
vote
2answers
92 views

Open source, Python option for Arcpy's Con tool?

I'm wondering if there is a method to perform a function similar to Arc's Con tool, using open source options in python. I have two rasters, one that shows locations of clouds and the other is just a ...