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mrosekulick in Spatial Analyst1 day ago (Show more Show less)

Creating hillshades from mosaicked 10m DEMs across UTM zones

Hello! I am attempting to make a set of large hillshades in ArcMap for California (split into 6 zones). I downloaded 10m DEMs for every county from NED. I created mosaics for each county, and then mosaicked groups of counties into larger regions. I then ran the hillshade tool (with default settings) for each region, but ran into this grid issue… (Show more Show less)

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rleclair-esristaff

(to mrosekulick) 1 day ago (Show more Show less)

Question for you - are you using a Mosaic Dataset or merging all the DEM rasters into a new single mosaicked raster dataset?

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hillel in Spatial Analyst3 days ago (Show more Show less)

Why does the mean of a raster have the value "nan"?

I used the tool Calculate Statistics on a few raster files. With most of them I got useful values for Min, Max, Mean and Std dev. But for 4 of them the Mean and Std dev. row only show the value "nan" while Min and Max are displayed properly. Do you have any advice how to fix the issue or an idea for another way to get the mean of a raster file? … (Show more Show less)

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jborgion

(to hillel) 3 days ago (Show more Show less)

Voodoo science. Haven't had one since yesterday where I found a text field set to 255 characters that had 269 characters in it.....

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

Problems about Euclidean Tool(Euclidean allocation)

Hi, I've run in to some problems when I've tried to use the euclidean-distance tool. As you can see on the picture the results are not displayed on the existing layers I also read the posts provided by specialists in GeoNet, and try to change the content in environment button, then I get a result of three layers, but they cannot be seen on… (Show more Show less)

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curtvprice

(to yxa9764) 4 days ago (Show more Show less)

I think setting the maximum distance is the answer here. I didn't see that before.

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jcoughli_EPA in Spatial Analyst1 month ago (Show more Show less)

How to create a percentile raster from .gdb containing multiple rasters?

Hi, I am trying to create a 5th and 95th percentile raster from a geodatabase containing multiple rasters (ranging from 26-60 rasters per .gdb). Essentially, I would like to perform the same function as cell stats (mean, max, median, etc) but calculating percentiles rather than simple stats. I've seen a few threads on this matter (this one in… (Show more Show less)

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Dan_Patterson

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

resolved? or still open?

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fergtwp in Spatial Analyst1 month ago (Show more Show less)

Raster Classification

I have recently flown aerials for our township. Our arborist wants me to do a Tree Canopy Assessment. There is a free toolbox to download. I had to acquire spatial analyst to use the toolbox. I've never worked anywhere that was willing to pay for SA, so I'm a bit out of touch with these things. In the toolbox, the input raster must contain 7… (Show more Show less)

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h.hu-esristaff

(to fergtwp) 2 weeks ago (Show more Show less)

Hi Eric, it sounds to me that you would like to preprocess your raster data so it can be consumed in the custom toolbox you downloaded. Can you be more specific about how you want to preprocess the data? Are you trying to simply reclassify the raster values into new categories, e.g. 255 values into 7 categories? or are you trying to do something…

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adamczi in Spatial Analyst2 years ago (Show more Show less)

Find percentage of raster classes inside polygon

I have a raster representing glacierized area with 2 classes: distinction between ice and snow. I also have DEM of the area. I would like to calculate an average height of the boundary between those two classes. I came up with an idea I could somehow calculate how many pixels of each class belong to a given height range (like 500-515m a.s.l.). For… (Show more Show less)

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tschlachter (to jayanta.poddar) 3 weeks ago (Show more Show less)

This is a great answer. Almost all of the zonal statistics related approaches to this problem seem overly complicated.

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deano87 in Spatial Analyst6 years ago (Show more Show less)

Too many contours to TopoToRaster into elevation?

Simply put, I am trying to convert 10m contours of an island into a rough picture of the elevation - there is no need for high accuracy here Upon running the topo to raster tool it says there are too many points (1557 records in attribute table) Do I just have to play with the number of iterations, or what options do I have here to end with a… (Show more Show less)

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curtvprice

(to deano87) 3 weeks ago (Show more Show less)

Your cell size is .0019 m (1.9 cm) -- given the extent your output raster would be huge. Suggest setting the output cell size to something like 5.0 or 10.0, or even 25.0 if you want a more general surface.

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kabindra55 in Spatial Analyst3 weeks ago (Show more Show less)

What does the AEX in ESRI basemap source stand for?

Credits (Attribution)Source: ESRI, i-cubed, USDA FSA, USGS, AEX, GeoEye, AeroGRID, Getmapping, IGP

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curtvprice

(to kabindra55) 3 weeks ago (Show more Show less)

My guess would be Aerials Express. See: Contributors for the World Imagery Map for details on the base map. This page was linked from the main AGOL content page for the World Imagery map layer: https://www.arcgis.com/home/item.html?id=10df2279f9684e4a9f6a7f08febac2a9

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mrn5550_uncw in Spatial Analyst4 weeks ago (Show more Show less)

Failed DEM from LiDAR

I created a DEM using a multipoint file that was derived from a .LAS file. The DEM did not use a large portion of the points and does not encompass the entirety of the study area. Several million points were excluded when creating the DEM using IDW. I ran the IDW a second time and, while the second DEM included more of the points, there was still… (Show more Show less)

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Dan_Patterson

(to mrn5550_uncw) 4 weeks ago (Show more Show less)

moving to Spatial Analyst

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Dan_Patterson mentioned Spatial Analyst 4 weeks ago Show mention context Hide mention context

Re: Failed DEM from LiDAR

Dan_Patterson mentioned Spatial Analyst 4 weeks ago

moving to Spatial AnalystPreview Hide preview

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