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Shared by dlaw-esristaff

from Portal for ArcGIS1 week ago (Show more Show less)

Identifying Polygons Left to Right

I am working on a project to identify a route of polygons through various towns. One of the requirements is that the Polygons have to identify going from start to finish left to right where the the first polygon is 0 and the final polygon is Xn. I was going to use the near tool and carve up the polygons and identify them based on a feature, label… (Show more Show less)

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david.gates in Analysis1 week ago (Show more Show less)

Polygon aggregation

I have polygon data for water bodies in a watershed generated from Google Earth Engine for years 1984-2015. I have one shapefile for each year. (I also have 1 shapefile that has them all combined, attributed with the year, if that helps.) Basically, in the data is showing how the water bodies have changed over time, thus, there are new polygons in… (Show more Show less)

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david.gates (to david.gates) 1 week ago (Show more Show less)

Using Google Earth Engine a tiff was created from landsat for each year. Each tiff was then converted to a polygon shapefile - 1 shapefile for each year with a bunch of water body polygons in each. So, there are instances where the polygons are the same, but most of the time they have shifted a little - due to differences in the imagery, I assume.…

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maldonadoje08 in Analysis2 weeks ago (Show more Show less)

Trying to Analyze a Line against a Multipatch/polygon

Hello All, First off, I am a complete novice with all of this, so thank you in advance for your patience!!! So I am in the process of trying to analyze the height of an object above a surface (Polygon or multipatch, I have made both). That being said, I used the original points of the objects, I then extruded them to their corresponding… (Show more Show less)

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roosvanderdeijl in Analysis1 month ago (Show more Show less)

Raster cell count changes

Hello there! Disclaimer: I'm a GIS beginner, so this might be a stupid question, but I haven't found useful help yet on the internet. Every time I do any calculation on my raster (raster calc, reclassify), the cell counts of the different values as well as the total cell count decrease by a factor (almost exactly) 4. The cell sizes and… (Show more Show less)

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LDreyfuss-esristaff

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

Hi Roos, The easiest way to access the actual raster cell counts is to right-click the raster in the Catalog window and select "Properties": http://desktop.arcgis.com/en/arcmap/10.6/manage-data/raster-and-images/raster-dataset-properties.htm I agree with Dan at this point, it might be time to contact Tech Support if the actual raster…

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spk578 mentioned Analysis 1 month ago Show mention context Hide mention context

Re: Hi, I am Gourav. I have delineated the watershed using different type of DEM(SRTM 30m, ASTER 30m, CARTOSAT 10m and Hybrid DEM 10m ). I have to validate Which one derived Watershed are accurate?

spk578 mentioned Analysis 1 month ago

Hi gourav panchal and welcome to the Coordinate Reference Systems Place! To determine the accuracy of a DEM requires some "true" elevation values, like point locations you know are accurate so that you can measure the error of a DEM vs the true values. The process would include the following process: Compute the root mean squared errorPreview Hide preview

Shared by spk578 from Coordinate Reference Systems1 month ago (Show more Show less)

Hi, I am Gourav. I have delineated the watershed using different type of DEM(SRTM 30m, ASTER 30m, CARTOSAT 10m and Hybrid DEM 10m ). I have to validate Which one derived Watershed are accurate?

I have delineated the watershed using different type of DEM(SRTM 30m, ASTER 30m, CARTOSAT 10m and Hybrid DEM 10m ). I have to validate Which one derived Watershed are accurate? How can i check the accuracy of watershed is good from the another three DEM data.

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tschlachter in Analysis1 month ago (Show more Show less)

Update cursor on layer with attachments - Arcpy Runtime Error

I am trying to use an update cursor to update the geometry of several thousand features that were collected in ArcCollector (basically snapping lines to points based on a field in the line layers attributes). The features that were collected in ArcCollector have attachments and attachment relation tables, and it appears that this is causing some… (Show more Show less)

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tschlachter (to JSimms-esristaff) 1 month ago (Show more Show less)

This worked. I wrapped the update cursor in an edit session. Thank you

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Shared by progis99 from Managing Data2 months ago (Show more Show less)

How do I combine two arrows with one arrow that has the same label name ?

Hi, I have a question that I am not sure of but .... I have Label Manager turn on and I am working on some of the polygons that need to be shown in clearly.. If you have a polygon that has two labels that are the same name... Look at the word "Cincinnati" Is there a way for me to combine two arrows into one ? Is that possible ?

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MFFP_COTPA2 in Analysis5 years ago (Show more Show less)

Functionality similar to "Sel Path" in ArcGis?

Formerly in ArcEdit (in Arc/info Workstation), I used the command "select path" that allowed me to select the shortest path between two selected arcs. Is there a similar command for ArcGis? Note that I do not have the license «Network Analysis».

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zanoguera (to MFFP_COTPA2) 2 months ago (Show more Show less)

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Marianneha in Analysis2 months ago (Show more Show less)

Geo code Table to layer

I have a layer (datatype: Feature Service Feature Class, Gemetry type: Polygon) with shape__Area and Shape__Length which shows 8 different areas. I want to look at the change in annual income for shopping malls within the different areas. I have a table that I have imported from Excel (Excel to table) that shows change in income for shopping malls… (Show more Show less)

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MarkShymanski (to Marianneha) 2 months ago (Show more Show less)

Good morning Marianne, This is an interesting task you have laid out here. Generally in approaching these types of questions it is helpful to start with the answer you want and then, without looking at the software, identify the data sources you have (the given data), the data that you need to create to answer the question (the derived data)…

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