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mdiskin_usfs in Spatial Analyst6 days ago (Show more Show less)

How does clipping a DEM (raster) affect the data?

I am working on a viewshed analysis using the USGS National Elevation Data. An area covering western NC and a small portion of eastern TN was originally extracted from Google Earth Engine. This data was transformed to NAD83 NC State Plane. I am using the Oberserver Points and Viewshed tools using a z factor of 3.281 (xy in feet, z in meters),… (Show more Show less)

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Dan_Patterson

(to mdiskin_usfs) 6 days ago (Show more Show less)

When you clipped, did you go to the Environments tab of the tool and set your raster cell size and snap raster to match the input raster? If you don't, then the cell size may default to something other than you want and the cell edges may not align exactly to the input raster leading to potential interpolation differences. Always check the…

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jakaiwaiima_2017 in Spatial Analyst4 months ago (Show more Show less)

LiDAR Data

I am working on the project entitled: Characterization of Agro-ecological terrains in Sierra Leone. Is LiDAR data is available for this domain in West African?

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jakaiwaiima_2017 (to DRadich-esristaff) 2 weeks ago (Show more Show less)

Thank you very much for your guide. Please kindly help me know which dataset under Earth Explorer is LiDAR. Kind regards. On Friday, 1 February 2019, 1:21:01 AM GMT+12, Daniel Radich <geonet@esri.com> wrote: #yiv5380276828 * #yiv5380276828 a #yiv5380276828 body {font-family:Helvetica, Arial, sans-serif;}#yiv5380276828 #yiv5380276828…

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Tiff33 in Spatial Analyst2 weeks ago (Show more Show less)

Can I determine farthest spot from multiple points?

Does anyone know a good tool or strategy for determining the following scenario: In a polygon there are multiple points in a single shapefile. Is there a way to figure out the spot/point in the polygon which is farthest away from all the points? Thanks!

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dparker1@uci.edu in Spatial Analyst2 weeks ago (Show more Show less)

trouble enabling extensions

I am having trouble enabling some extension (Geostatistical Analyst and Spatial Analyst). I've re-installed software now, I've authorized the software, including the extensions. I've gone into ArcMap to enable the extensions through Customize. But I'm not able to enable them (see attached images). I think it may have something to do with the… (Show more Show less)

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Dan_Patterson

(to dparker1@uci.edu) 2 weeks ago (Show more Show less)

were they trial versions? or were your licenses issued by some organization? Once they are expired, they need to be reissued. If you think the problem is an error, you should contact tech support and discuss with them.

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MMathias-esristaff mentioned Spatial Analyst 2 weeks ago Show mention context Hide mention context

Re: Introduce Yourself!

MMathias-esristaff mentioned Spatial Analyst 2 weeks ago

Hi Harry, Welcome to GeoNet! Hopefully, you will find GeoNet a valuable resource to continue your GIS career and knowledge. Here are a few places you might be interested in checking out: ArcNesia Spatial Analyst 3D Cheers! Preview Hide preview

cheesypoofs_ in Spatial Analyst3 weeks ago (Show more Show less)

Population Density with graduated colors isn't reflected in map

Hi, I'm using ArcMap 10.3.1, 180-day trial version, to do a population density per square mile map with graduated colors but instead of getting a map with different colors for the different classes, my entire map is all one color and it's the color for the lowest value class. I checked the histogram and there are values for the other break… (Show more Show less)

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cheesypoofs_ (to Cimejes) 2 weeks ago (Show more Show less)

Hi Stephen, thanks for your help. I'll try Dan's solution.

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awynn@gsa.state.al.us in Spatial Analyst2 years ago (Show more Show less)

using the Flow Length tool in Spatial Analyst's Hydrology Toolbox to find the Longest Flow Path

How do you find the longest flow path with the Flow Length tool in Spatial Analyst's Hydrology Toolbox? In the ArcGIS Help, it states "A primary use of the Flow Length tool is to calculate the length of the longest flow path within a given basin". How? I know that Arc Hydro has a tool that does this, and I have used it before - but I was… (Show more Show less)

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tomdilts (to lsturtevant) 2 weeks ago (Show more Show less)

Hi Luke. Thanks for pointing that out. I've updated the zip file so that it is no longer empty.

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bibiannjiru447 in Spatial Analyst3 weeks ago (Show more Show less)

Hello Geonet community?When performing overlay weighted analysis,must all your criteria have to be reclassified into a uniform scale (let's say 5 classes) or you can have some with 3 classes?

suitability reclassification weighted overlay #gis My initial goal was to use 5 classes, however, I am dealing with soil dataset which can only be reclassified into 3 classes based on my area of study, the other datasets include slope, roads, rivers, land use landCover etc which can be reclassified into 5 classes.

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xander_bakker (to bibiannjiru447) 3 weeks ago (Show more Show less)

Can you provide some screenshots of your input data and the configuration of the tool?

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keithnabbott in Spatial Analyst5 months ago (Show more Show less)

ModelBuilder - IDW (SA or 3D) - Z value field - Inline Variable Error 001000

Hello, I'm not able to use an inline variable (i.e., %Value%) to populate the Z value field of the IDW tool associated with the Spatial Analyst (SA) and 3D Analyst (3D) toolboxes. The Z value field of the IDW tool associated with the Geostatistical Analyst (GA) toolbox, however, does accept an inline variable (i.e., %Value%). Here's the… (Show more Show less)

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DRadich-esristaff

(to keithnabbott) 3 weeks ago (Show more Show less)

Hey Keith, It looks like this issue you are running into is most likely a defect correlated to the use of the inline variables. Have you tried running the model in ArcGIS Pro? Do you seem the same behavior with a model in that environment? Are you able to provide the point data? I am wondering if there is a pre-processing step that we can…

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strevisani in Spatial Analyst2 months ago (Show more Show less)

Forcing raster snapping to use bilinear interpolation

From what I understand when there are two or more rasters not aligned (i.e., a small shift of their pixel centers) the snapping in arcgis is generally performed via nearest neighbor. In some circumstances this is not a good solution, it is better to align pixels using bilinear interpolation (or other interpolation approaches). So I'm wondering if… (Show more Show less)

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strevisani (to strevisani) 3 weeks ago (Show more Show less)

Hi Curtis, Thank you, I marked correct your first reply (i.e., no way to force the use of bilinear interpolation on the fly). However, I have no confusion on "snap setting", I just mentioned it because when you check the help of raster calculator (arcmap 10.5.1) the only setting that could seems (but it is not!) related to alignment issues…

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