Latest Contributions by JamalNUMAN

invalid link error Thanks Dan. but why it is invalid? ... View more

Yes, it is valid for feature classes since they use ObjectID too.  For additional details on geodatabase limits you can review File geodatabase size and name limits Many Thanks Eric. this is quite useful. best Jamal ... View more

Jamal, Please follow the steps in the knowledge base article to resolve this issue. HowTo:  Compute the histogram with all the unique values, when using the classified renderer Regards, Eric Many thanks for the help. I�??ll try it and let you know [ATTACH=CONFIG]14873[/ATTACH] Best Jamal ... View more

You should be able to do this with the Lookup function similar to one of your other forum posts:What is wrong with this syntax when using the �??raster calculator�?�?. "P_rec" * Lookup("I_rec","I_factor") Many thanks for the help Timothy. The syntax you have provided solved my issue. [ATTACH=CONFIG]14850[/ATTACH] ... View more

Jamal Because the environment shows up does not mean that it is supported. Random numbers in the environment, for example, are not supported when you do CopyFeatures. The tool's help lists which environments are supported. Also, MASK is supported by nearly all the tools in the Spatial Analyst toolbox, all the Geostatistical Anlyst tools that output raster (but only from 10.1 onwards). The tools in the Conversion toolbox and the Raster tools in the DataManagement toolbox, for example,  also do not support mask. I hope this helps you better understand which tools support mask. Steve Many thanks for the elaboration Steve. Very useful. Best Jamal ... View more

Hi Jamal, According to the Help, it doesn't look like it uses the Mask environment variable. Topo to Raster (Spatial Analyst) If you look at the bottom under Environments, you will see that Mask is not listed. Patrick. p.s. To better direct questions dealing with Spatial Analyst tools, it is better to post in the Spatial Analyst forum, not the ArcGIS Desktop - General forum.  Same goes for raster data, it is better to post in the Imagery and Raster forum and not the ArcGIS Desktop - General forum. Many thanks for the answer Patrick. Please, have a look on the screenshot below and let me know what do you think? [ATTACH=CONFIG]14820[/ATTACH] ... View more

The maximum possible ObjectID value is 2,147,483,648. The ObjectID field is maintained by ArcGIS and guarantees a unique ID for each row in a table.  This is the limit of records in a table in theory.  However, since raster attribute tables outside of a geodatabase are maintained/created as .dbf files, they are subject to the 2gb limit on disk just like a shapefile's attribute table would be. Regards, Eric Many thanks for the prompt answer Eric. This is very useful elaboration. Is this valid in case of the attribute tables of feature classes (point, polyline, polygon)? What about their maximum number of records and columns that they can take? ... View more

Hi folks, I wonder if any of you out there know what the theoretical limit on the number of records which can be stored in a raster value attribute table is? I am building a series of stepwise combination rasters which may yield in excess of 2 million unique combinations. I know you can select the option not to build a raster attribute table when the number of unique values is greater than a number you specify (65,536 the default) by going to Tools - Options - Raster Tab - Raster Attribute Table, but I wondered whether there is a limit on the number of records which can be generated, or whether this limit is governed by the size of the attribute table stored on disk (2GB)? Any input appreciated... Dave Hi Dave, did you figure out the maximum number of record the attribute table of the raster can have? thanks Jamal ... View more

Look back at your first post, in the first screenshot. The sampling button is in the window where you modify the 'class ranges'. I think you press the "Classify" button inside the "Reclassify" tool. Many thanks for the prompt answer. Sorry but I couldn�??t know how to change the sampling size. The screenshot is below. How to change the sample? [ATTACH=CONFIG]14691[/ATTACH] ... View more

Hi Jamal, Please see this thread.  What you want to use is called Dot Notation.  At 10 this functionality does not exist any longer (although there is an enhancement request to bring this back).  What you can do it using the Lookup tool, to create 2 new rasters based on your fields, then multiply these together. Patrick. Hi Patrick, does this enhancement now available through the service packs? best Jamal ... View more

That is a strange issue.. Can you increase the sampling size to anything higher than the "Count"? Your count is 343809 so try to use a sampling size of 345000, for example. I think by default your sampling is set to ~10,000. Thank you for the answer. I�??m not sure why the �??reclassify�?� doesn�??t read the values from the input raster! That�??s really frustrating! How can I switch the sampling size? Could you please elaborate more? [ATTACH=CONFIG]14668[/ATTACH], [ATTACH=CONFIG]14669[/ATTACH] Best Jamal ... View more