Latest Contributions by MarkBoucher

Can i somehow filter out only the relevant flow-directions that go towards the lake? If you have the fdr grid, you should be able to deliniate all areas that flow to the lake by creating a watershed from the lake outlet. This would give you a polygon. Then you can use a polygon of the lake to mask out the lake and result in the areas that flow to it. ... View more

Rajat, That seems like a long time to be burning streams. I've posted several things at this link:http://forums.arcgis.com/threads/48100-ArcHydro-Problem-Solvers If you are still having long runs with not results, check the temp file and see if the the number and time stamps on the files are changing. My temp file is at C:\Users\mboucher\AppData\Local\Temp. Another tip is to put all the data on your local PC and not on the network. I'm no network expert, but I my suspicion is that the data transfer over the network is slow and maybe the data can be "corrupted" as it goes through local routers, etc. When I started putting my files on the local drive, things sped up dramatically and errors stopped happening. Obviously, you will want to put the files on the network for on-going backups and for the final product. Before moving it all, set the option in the mxd to store relative path names. This will keep you from having to remap the data paths. Also, make sure you update the target locations for your Arc Hydro work. If you don't, some data will be stored in the wrong location. Hope these tips help.  Cheers! Mark ... View more

Eric - To get the values into his original points' table, doesn't he have to do my steps 3 and 4? ... View more

If you have a DEM, you can create the contours using Spatial Analyst tools. You just have to make the vertical interval small enough that they show up. If the depression is small, a large vertical interval might miss a depression unless the depression happens to be at an elevation that is right on the contour interval. The contours are lines. I suppose if you convert the layer of lines to polygons, probably only those polylines that close will be converted to polygons. You can then visually see the depressions as polygons. I assume their area would be small and you could search for the polygon with the smallest area. Hill/mountain tops will also have small polygons. ... View more

The password changed. http://forums.arcgis.com/threads/82087-New-password-for-Arc-Hydro-ftp-site ... View more

To "drop a point" you need to create a point feature class and add a point to it. ... View more

You can use the Buffer tool (Toolboxes\System Toolboxes\Analysis Tools.tbx\Proximity\Buffer) If you want circles, put a point where you want the circles to be centered on and run the buffer on that point. You can do this twice to create the two circles. If they are not where you want them, edit the layer(s) and move them. You can also buffer polygons. If you have several polygons, you can edit and merge the buffers after the running the buffer tool or choose the "Dissolve" option when you run it. Again, you can buffer twice. I think in Arc Info you can use the multiple buffer tool to get all the buffers in one tool run. ... View more

If the model is exported to script, can it be imported back in to recreate the model? ... View more

There is one in SA: Toolboxes\System Toolboxes\Spatial Analyst Tools.tbx\Hydrology\Stream Order ... View more

I'm behind you on the arcpy script learning curve and look on with envy and interest. Some thoughts... Have your target locations been set? Maybe the results are output to some other yet to be discovered folder. I see you have the user input the "outputDIR". Remember: the rasters go into a folder with same name as the dataframe and the vector data goes into a geodatabase with the same name as the file and a dataset with the same name as the dataframe. This is my understanding of the the Arc Hydro default. The geodatabase name may not be that important, but Arc Hydro uses the network feature and that requires the use of the geodatabase. Therefore, having everything simply go to an "outputDIR" may not set up the vector data for the network functions. ... View more

You may find this thread has a solution. http://forums.arcgis.com/threads/78067-how-can-I-eliminate-quot-island-quot-raster-cells-from-a-layer?p=274563&viewfull=1#post274563 You'd need to do something to make the northeast area remain no-data. ... View more

Do graphics make annotations not draw like they make labels not draw? If so, are their any graphics leftover from the crash? ... View more

I think what you want to do is to convert your wetland polygons to polylines, and then perform an intersect between the buffer and the polylines. This should result in polylines that you can calculate the length of. Put them in a geodatabase and their lengths are automatically calculated. ... View more

Look at http://forums.arcgis.com/threads/82087-New-password-for-Arc-Hydro-ftp-site ... View more