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dameli@asu.edu in Spatial Analyst1 week ago (Show more Show less)

ArcGIS Desktop. Surface Volume VS Cut Fill

Hi Does anybody know how Surface Volume is differ from Cut Fill? Thanks

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Dan_Patterson

(to dameli@asu.edu) 6 days ago (Show more Show less)

They do different things, as you will have noted in the help files.

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roj046 in Spatial Analyst7 years ago (Show more Show less)

Length of flow paths from catchment boundary to river

Hi I am trying to calculate the length of the path water would take from a catchment boundary to a river within the catchment (basically the shortest path to the river taking the steepest slope each time from each position). I want to calculate this incrementally as I move around the border of the catchment until I have completed a sweep of the… (Show more Show less)

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NRajasekar-esristaff

(to roj046) 6 days ago (Show more Show less)

In the latest versions of ArcGIS Desktop and ArcGIS Pro, we have introduced a new tool in the Spatial Analyst Toolbox, Hydrology toolset that addresses this problem. Please take a look at the help topic Flow Distance—Help | ArcGIS Desktop for ArcMAP and Flow Distance—Help | ArcGIS Desktop for ArcGIS Pro. This tool takes an 'input stream raster'…

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kunom in Spatial Analyst1 week ago (Show more Show less)

slope analysis along road and to extract the points where their slope% out of range (-0.05 to 0.05)

I have a line feature with elevation value, I need to extract a point along the line where its slope percentage is out of the range (-0.05 to 0.05), what I tried was I created a number of points by featureverticestopoint with all option, I got a big point data, then I tried to compare slope from one point to the other but I could not come up which… (Show more Show less)

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MWaterman-esristaff

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

Hi Kunom Assefa, Could you use Select by Attribute to select the point records where the elevation field is less than -0.05 OR the elevation is greater than 0.05, and then export the selected records to a new feature class? The location of the point features should be retained. Best, Morgan

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allisynh77 in Spatial Analyst5 years ago (Show more Show less)

Point Solar Radiation tool not working for me

Hello, I am trying to create a solar radiation output from a 10m DEM (NED) and am running in to the following errors. Error 010016: Error in calculating horizon and radiation Error 010169: Row and column do not make pairs or are out of DEM boundary I currently have 47 input points and would like to output a whole year with monthly intervals.… (Show more Show less)

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curtvprice

(to allisynh77) 1 week ago (Show more Show less)

I would project your points so their coordinate system is the same as the DEM. You could do this by exporting the events in the coordinate system of the map/data frame or by using the Project tool.

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hmohamed_collin in Spatial Analyst1 week ago (Show more Show less)

calculate x Minutes response time

I received an Excel file with data on previous 3 years fire and emergency response times. I was able to geocode 85% of the data, I have the following fields ReceivedCallDateTime, DispDateTime, EnrDateTime, ArrDateTime, CLRDatetime, I asked to to map the response times without the Network Analyst since we dont have well configured road network,… (Show more Show less)

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curtvprice

(to hmohamed_collin) 1 week ago (Show more Show less)

Seems to me what you want to do is measure distance using cost path and calculate a regression with your dataset to estimate what you'd get everywhere (as apposed to just at your points. But if your point density is high enough, just building an interpolated (eg IDW) surface from your response time points would probably meet your purpose. Heat…

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hs100789 in Spatial Analyst5 months ago (Show more Show less)

Georeferencing issues

Hello, I recently upgraded to 10.5 from 10.2.1. Everything was going fine until I tried to georeference. Everything would be fine until I hit 'Update Georeference' at which point the tiff would move to a different location. Usually it would just be scooted down, but every now and then it would be moved off into no man's land. I researched trying… (Show more Show less)

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ABCanty (to hs100789) 1 week ago (Show more Show less)

My group has been experiencing the same issue and can't seem to figure it out. We recently upgraded from 10.5.1 to 10.6.1 hoping that the issue was resolved, but it hasn't changed. So far the only work around we've found is to use JPGs instead of TIFFs, which is not always ideal for certain workflows.

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stavroyla.giannakopoyloy in Spatial Analyst1 week ago (Show more Show less)

Export Rasters

Hello everyone!!! I would like to answer a question. Does anybody knows how to export a raster with the categories that it represents at my mxd?For example, i want to export a DEM with the categories 500 m, 1000 m and 2000 m. Your answers wille be very useful!!!Thank you very much!!!

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Dan_Patterson

(to stavroyla.giannakopoyloy) 1 week ago (Show more Show less)

Then posting the question as 'assumed answered' won't really help you answer your question. Also, I don't think you want the categories to be exactly 500 1000 and 2000 but <=500 500-1000 etc. IN which case you would 'reclass' the raster or simply symbolize it to show those ranges. You can also 'contour' the raster at those values if you do need…

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john.c.cartwright_noaa in Spatial Analyst3 months ago (Show more Show less)

summarize the raster values within a specified area of interest

I'm looking to summarize the raster values (min, max, avg) within a specified area of interest with the eventual goal of incorporating it into a GP service. SummarizeRasterWithin_ra looks close but I want to pass in a single geometry. Suggestions? Thanks! --john

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MWaterman-esristaff

(to john.c.cartwright_noaa) 1 week ago (Show more Show less)

Hi John Cartwright, Could you please clarify what you mean by "pass in a single geometry"? The workflow will depend on whether your area of interest input layer is a feature class or raster. If it is a feature class, you could try selecting and exporting the desired feature into a new feature class and then run Summarize Within on just that…

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from Py... blog1 week ago (Show more Show less)

Generalization tools for rasters...

Scipy ndimage morphology … I am betting that is the first thought that popped into your head. A new set of tools for the raster arsenal. But wait! Their terminology is different than that used by ArcGIS Pro or even ArcMap. What tools are there? Lots of filtering tools, but some of the interesting ones are below from scipy import ndimage as nd… (Show more Show less)

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stavroyla.giannakopoyloy in Spatial Analyst2 weeks ago (Show more Show less)

Weighted rasters!

Hello, I would like to create a weighted raster. To be more specific, i created the aspect map of a region but i want to give specific value for every orientation. After that i want to give a specific weight in the aspect raster, in order to calculate the risk of fire. Any idea would be very helpful!!!Thanks a lot!!!!

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Dan_Patterson

(to stavroyla.giannakopoyloy) 2 weeks ago (Show more Show less)

hope it works out

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