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SalmanAhmed3
New Contributor III
since
05-23-2016
11-11-2020
14
Posts created
3
Kudos given
1
Solutions
5
Kudos received
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My Ideas
(0 Idea Submissions)Latest Contributions by SalmanAhmed3
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Can you tell me what is the purpose of this scale factor? Ive calculated NDVI from Landsat TM and never applied this scale factor. Ive always got the correct values nevertheless. Thats why Im a bit confused why to use this?
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07-26-2017
02:28 AM
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I wrote 'value field' in the question already. I just realised that its wrong to do a field statistic for mean on this value field because this value field in the raster attribute table does not show the values of all the cells in that raster. It shows only all the unique values with the cell count being shown in the 'count field'. So cannot expect to calculate mean from here by just doing field statistics. So I guess my question is answered. Using the zonal statistics tool is the right way. Thanks!
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11-24-2016
11:08 AM
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I calculated mean from a raster for a single polygon using zonal statistics as table tool and got the mean as 440000. The raster is the exact same shape as the polygon (used extract by mask tool for this). When I open the attribute table of this raster and do field statistics on the value field, I see that the mean is 330000. How is this possible? Shouldnt the two means be same if not exactly same? Any ideas why this is happening? This is big problem because I want to know which one is correct.
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11-24-2016
08:12 AM
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2017
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Hi, I have extracted two rasters using Extract by Mask tool to the shape of my city. The two rasters are from different years but they have the same spatial resolution (30m). But when I built the raster attribute table for them I see that one raster has much lesser number of rows (which means less cells?) than the other (3693 vs 182638). I dont understand how is this possible when they are of the same resolution? I cant carry out area analyses if the two are different because I have to multiply the number of cells with 30 to get the area in square meters. Thanks for your help.
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11-04-2016
08:38 AM
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I guess you cannot replace it. You just have to create a new account with a new ID and not with your Google or Facebook login info. I've done the same and now I have an account with my Google login info and another one with another login info (which I can also use in ArcMap to connect with ArcGIS online).
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11-04-2016
02:54 AM
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1084
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Oh yes! Pivot table is what I wanted. Thanks Michael and Dan
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07-01-2016
04:38 AM
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Is there anyway in ArcGIS to convert the first table into the second one? I thought about it a lot but couldn't get the idea how to do even using python (I'm a python beginner).
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06-30-2016
08:24 AM
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Thanks. the second link here is exactly what is not working for me (signing in from ArcMap), which I mentioned in my question already.
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05-31-2016
04:35 AM
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1084
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I recently created an ArcGIS online account using my Google login data. I am unable to log into ArcGIS online through ArcMap because there is no option to login through Google (with its logo under the sign-in dialogue). I tried just typing in my Google username and password but it says invalid. I am able to sign-in through the browser but not ArcMap. I need to access Esri open data through ArcMap for my analysis.
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05-26-2016
03:37 AM
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Just make the projection of the data frame into WGS_1984_Web_Mercator_Auxiliary_Sphere and you will see a difference in loading times for sure.
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05-25-2016
08:12 AM
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Just don't change the ArcGIS default output location when running the tool. You can change the name of the output file though. But let it save in the default directory given by ArcGIS (somewhere in User-Documents-ArcGIS-...). Works for me with this trick.
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05-23-2016
06:41 AM
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I found a fix to this error. Just don't change the ArcGIS default output location when running the tool. You can change the name of the output file though. But let it save in the default directory given by ArcGIS (somewhere in User-Documents-ArcGIS-...). And if the default path is something else (maybe a colleague changed it or something) then that is not considered as the default path. It should be ArcGIS defult path in the location I roughly mention above.
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05-23-2016
06:40 AM
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I agree that not changing the default output location (ArcGIS default) does the trick. The above suggested method of using the editing environment worked for me at first but then started giving the same error. But the default location trick is still working perfect for me.
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05-23-2016
06:37 AM
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My kudoed posts
| Title | Kudos | Posted |
|---|---|---|
| 1 | 05-25-2016 08:12 AM | |
| 1 | 05-31-2016 04:35 AM | |
| 1 | 11-24-2016 11:08 AM | |
| 1 | 05-26-2016 03:37 AM | |
| 1 | 06-30-2016 08:24 AM |
Activity Feed
- Got a Kudo for Re: ArcMap Aerial Basemaps take forever to load. 12-11-2020 08:11 AM
- Got a Kudo for Re: Cant login to ArcGIS online through ArcMap with Google. 11-11-2020 02:05 AM
- Got a Kudo for Re: Zonal statistics mean VS Field statistics mean, which is correct?. 11-11-2020 02:05 AM
- Posted Re: Formula for Enhanced Vegetation Index (EVI) in Raster Calculator? on ArcGIS Spatial Analyst Questions. 07-26-2017 02:28 AM
- Posted Re: Zonal statistics mean VS Field statistics mean, which is correct? on Spatial Data Science Questions. 11-24-2016 11:08 AM
- Posted Zonal statistics mean VS Field statistics mean, which is correct? on Spatial Data Science Questions. 11-24-2016 08:12 AM
- Tagged Zonal statistics mean VS Field statistics mean, which is correct? on Spatial Data Science Questions. 11-24-2016 08:12 AM
- Tagged Zonal statistics mean VS Field statistics mean, which is correct? on Spatial Data Science Questions. 11-24-2016 08:12 AM
- Tagged Zonal statistics mean VS Field statistics mean, which is correct? on Spatial Data Science Questions. 11-24-2016 08:12 AM
- Posted Different number of raster cells in the same area on Imagery and Remote Sensing Questions. 11-04-2016 08:38 AM
- Tagged Different number of raster cells in the same area on Imagery and Remote Sensing Questions. 11-04-2016 08:38 AM
- Tagged Different number of raster cells in the same area on Imagery and Remote Sensing Questions. 11-04-2016 08:38 AM
- Tagged Different number of raster cells in the same area on Imagery and Remote Sensing Questions. 11-04-2016 08:38 AM
- Posted Re: Cant login to ArcGIS online through ArcMap with Google on ArcGIS Online Questions. 11-04-2016 02:54 AM
- Got a Kudo for Cant login to ArcGIS online through ArcMap with Google . 10-09-2016 12:09 AM
- Posted Re: How to convert into this table? on Data Management Questions. 07-01-2016 04:38 AM
- Got a Kudo for How to convert into this table?. 06-30-2016 08:51 AM
- Posted How to convert into this table? on Data Management Questions. 06-30-2016 08:24 AM
- Tagged How to convert into this table? on Data Management Questions. 06-30-2016 08:24 AM
- Tagged How to convert into this table? on Data Management Questions. 06-30-2016 08:24 AM
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02:24 AM
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