Latest Contributions by AthenaWong

I'm having some trouble here: I've failed to generate Catchment grid delineation (under Terrain Preprocessing). The error message I get is: 000049 : Failed to build attribute table I'm recalculated my raster so that it is single band, integer type but still cannot build my attribute table.  Can someone gimme a hand at this? Thanks in advance! ... View more

Many thanks guys!! exactly what i'm looking for 😃 ... View more

Hi Khalid, Thanks for the help. Unfortunately I can't seem to send a 5MB attachment here. But with my screenshot attached earlier, would the parameters I've inputted be the problem? And I guess this is a step that one must go through in order to perform a shadow analysis, am i correct? Thanks again. Athena ... View more

Hi Kduri, Thanks for your help in advance.  I've checked my data and everything is spatially referenced (Hong Kong 1980 Grid). I would like to send you the copy of my sample data, however attachments can only be up to 2MB here, is there somewhere that I can send my data through? Thanks! Regards, Athena ... View more

Hi athena.nc, Would you like to attach some screenshots and/or email me your FGDB you're working with? Cheers Hi Shaun, Please see the attachment for the error message and sunmap parameters which I've entered. Thanks! Cheers, Athena ... View more

Hello Shaun, I apologize for the trouble you've experienced. Please use the attached script to generate the Sun sky map points instead of the one on the resource center link. That one will be updated with the one attached here shortly. Hi, I also need some help here. I've tried both the scripts (from resource and the attachment above), yet it keep returning me with the error message: There are no daylight times for the specified arguments. I did a number of testings and realize, the problem might have to do with the time zones. (While the Eastern timezone works fine, error occurs on the western ones such as Hanoi, Tokyo, Hong Kong etc.)  Can you please give me some helpful guides??  Thanks ... View more

Hi, I'm stumbling upon the same problem.. except that I'm still using ArcGIS 9.3. I've a building feature with elevation value and converted it to Raster dataset attempting to merge it onto an existing dem.  I don't quite follow what you suggested above: "Basically you want to say where my building raster is null, replace it with the value of the DEM, and where it is not null, add the two rasters together. It looks like this. [newsurf] = CON(ISNULL([polygrid]),[dem],[dem] + [polygrid])" Do I have to set my building raster to null before running the above conditional statement? I've done it using Map Algebra -> SIngle Output Map Algerbra but what happened was the new surface cropped out half of my existing dem (leaving an area where my buildings reside).   Hope you can give me a hand here.... THANKS! ... View more