POST
|
Hi all, about flow accumulation processing: is it possible to take more than a weekend to process a raster 66 Mb? I'm having a similar problem since a couple of weeks ago: I do not know the % progress of the flow accumulation tool, it is taking more than what I've worked before for similar areas (Amazon), and I do not know whether to stop it and try it again, or to wait. Is it ok when the processing is ongoing that arcmap says "NOT RESPONDING"? that is, was is supposed not to be able to make any other work while this tool is running? please, all help will be appreciated. thanks!
... View more
06-21-2011
06:40 AM
|
0
|
0
|
799
|
POST
|
You might be referring a license server here, but... not problem with license, I've checked that too. One of the largest performance enhancements you can make with any ArcGIS tool is to processes the data using your local hard drive(s). That is, don't try to run these processes from data stored on a network. In both cases, rasters are placed on main drive (C:/). What it's interesting is that in both cases the Flow Accumulation status is shown as "in progress", and on the background the open ArcMap says: Not responding. Since the message in the status bar is: UPDATING FLOW ACCUMULATION, that means ArcMap is in processing and that is why "IS NOT RESPONDING"? This time I've not even try to touch this process and it still on...since last Friday. Also, I assume you ran the Fill tool on your input DEM (before you made your flow directions grid), correct? yes, DEM was projected, filled, etc. As said before: since I've done same thing for the other regions all of a sudden this problem just started, I felt it was a like-bug in the tool, or something. Is that possible? I was thinking to run one of the rasters I did before, to check whether the problem occurs or not (since those raster were processed with no problems in a few hours of processing, if they do not work now it's because is a tool problem).
... View more
06-20-2011
09:21 AM
|
0
|
0
|
3321
|
POST
|
Hello Chris, thank you very much for your response. How big is your input flowdir grid (pixel height x pixel width)? If I'm not wrong (I calculated height and width after extent information of my raster, already projected) this raster has 8779 pixel-height by 7904 pixel-width (I subtracted top - bottom, and right - left in extent information, and then divided both by pixel size...was that correct?). Flow accumulaton can take an extreemly long time to run on large grids. I have had some flow accumulation process take a week to run on a fast machine. After I read your response on Friday I left in 2 machines the tool running, came back after the weekend and both are still working, one lost connection to the server (now is back connected, and continue with the process) and the other says "updating flow accumulation" and arc map is not appearing/displaying the raster, only the status bar shows work in progress ("Updating Flow Accumulation"). I will leave for some more time, as you suggested. However, I've done same tool/process with same raster source but for different regions and -I would say- such similar large area size, and it worked very well, I have delineated my drainage areas/polygons for other 2 nearby regions. Yes, it took time (a few hours) for those previous, this situation appeared for this last region. The larger the flow accumulation you have in your data, the longer the tool will take to run. So, for example, it will take much longer to run for a grid mostly composed of a large single basin that drains to one point (like the Amazone River) than a grid of the same size that has many smaller basins that drain radially outwards from the center (like Mt. Kilimanjaro). this is also true in my case, this area has several large sub-basins (Amazon System) that drains off the country limits, that is: several tributaries with other tributaries that has no ONLY ONE outlet in common. That is perhaps the reason, and the difference when compared with my others areas, that this raster process may take longer time. I'll leave the process for more days. Once again, thanks for your help!
... View more
06-20-2011
07:15 AM
|
0
|
0
|
3321
|
POST
|
I'm still having problems with Flow Accumulation tool in Hydrology/Spatial Analyst. Arcmap shows work in progress (It says: "Updating flow accumulation..."), however it never ends. I've tried with Arcmap 9.3, Arcmap 10. I just created a new raster of flow direction, in the case the previous I used was corrupted, but the problem still: the process never ends and I have to stop it (last time it was done was during a whole weekend). I've donde same process for other regions and it worked very well, this situation just started to occur a couple of weeks ago. I'm very concern whether something is wrong with my data (license and extensions are checked, and ok) or it is something happening with the tool and there is a solution (patch, or similar from ESRI). please, all help will be very appreciated.
... View more
06-15-2011
01:43 PM
|
0
|
7
|
12994
|
POST
|
Hi, it's both, single license and server license. I've tried both ways, but it seems the problem still. I'm thinking it's perhaps the raster file size, so I left running again yesterday, hope it works and finish along the weekend. Could it be something with my data? or something with server connection or tool bug? thanks for the replies. cc
... View more
06-04-2011
04:21 PM
|
0
|
0
|
425
|
POST
|
Hello, I've been using Spatial Analyst tool ArcMap10 during the last 5 weeks. This last weekend after running Hydrology tool (Flow accumulation) for more than 6 hours, I've got an error message saying: "ERROR 010096: THERE IS NO SPATIAL ANALYST LICENSE CURRENTLY AVAILABLE OR ENABLED". I did check on my ArcGIS Administrator and Spatial Analyst has "YES" on "Installed/Authorized" and has as Expires date: 28 Jan 2012. I also looked at Customize/Extensions in ArcMap and Spatial Analyst extension is checked. What could be the problem? Why I cannot run Spatial Analyst/Hydrology/FlowAcumulation tool? With that error message I obtained, can it be some problem with my raster? I'll appreciate any help as soon as possible. best, Katunga
... View more
06-01-2011
06:59 AM
|
0
|
4
|
1284
|
POST
|
Hello, I have several shapefiles, each one representing a quadrant o a river basin. I want to make them "one only shapefile" representing the lines of this basin. I thought to use "union" in overlay tools, however it is only to join polygons, these shapes are lines. In total, I have 49 shapefiles with all tributaries (lines) of the basin. any suggestions?
... View more
03-22-2011
12:04 PM
|
0
|
1
|
488
|
Online Status |
Offline
|
Date Last Visited |
11-11-2020
02:23 AM
|