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JamalNUMAN
Legendary Contributor
since
07-04-2014
3 weeks ago
4916
Posts created
4022
Kudos given
11
Solutions
6749
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My Ideas
(103 Idea Submissions)Latest Contributions by JamalNUMAN
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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]
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05-28-2012
02:24 PM
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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
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05-26-2012
12:02 PM
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1098
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How to multiply two layers based on particular fields? In the screenshot below, I wanted the first raster based on the field named ???I_factor??? with the second raster based on the field named ???value??? but couldn???t know the correct syntax to perform this process! What might be the correct syntax? [ATTACH=CONFIG]14673[/ATTACH] Thank you for the help, Best Jamal
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05-26-2012
11:56 AM
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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
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05-26-2012
12:32 AM
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5386
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Reclassifying a raster produces �??weird�?� values! I wanted to reclassify the raster shown in the screenshot below: [ATTACH=CONFIG]14663[/ATTACH], [ATTACH=CONFIG]14663[/ATTACH], [ATTACH=CONFIG]14664[/ATTACH][ATTACH=CONFIG]14665[/ATTACH] 1. The maximum cell value in the raster doesn�??t match that one shown by the �??reclassify�?� tool! How come? 2. How come the reclassify tool doesn�??t see the maximum value existing in the original raster and thus more values appear rather than the ranges specified on the reclassification! How to overcome this problem? How to let the �??reclassify�?� tool see all the values of the original raster? Thank you for the help, Best Jamal
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05-25-2012
12:21 PM
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8439
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Renaming the raster doesn�??t work. I wanted to rename the raster �??rainfall�?� to be �??Rainfall�?� (to make the first letter capital) but the raster doesn�??t respond! It remains as �??rainfall�?�! What might be the problem? [ATTACH=CONFIG]14654[/ATTACH] the raster is attached. Thank you for the help, Best Jamal
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05-25-2012
10:04 AM
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The fields of the attribute table of the raster in the catalog window I�??m wondering why the �??catalog view�?� of doesn�??t show the fields of the attribute table of raster as main component of its properties while it does so for polygons, polyline and points? [ATTACH=CONFIG]14652[/ATTACH], [ATTACH=CONFIG]14653[/ATTACH] Thank you for the help, Best Jamal
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05-25-2012
09:58 AM
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Dividing two rasters produces a raster of one value (which is zero)! The PI raster is divided by the HI raster (shown in the screenshot below also attached) and raster of one value (which is zero) is produced. The manual calculation for the division of the two raster doesn�??t produce a raster of zero value! It should be a raster which has cell values less than one considering the values of the input rasters. [ATTACH=CONFIG]14649[/ATTACH], [ATTACH=CONFIG]14650[/ATTACH] Why the ArcGIS produce raster of zero value in this case? Thank you for the help, Best Jamal
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05-25-2012
09:15 AM
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How to force the classification to follow particular values? When doing the classification for raster, the classification starts from the minimum cell value. For the integrity of the work, we need to set the classification to be valid in all cases depending on the workflow that we have. For example, how to make the classification of the raster follow the values in the table below: [ATTACH=CONFIG]14640[/ATTACH] Please, have a look on the screenshot and attached data [ATTACH=CONFIG]14638[/ATTACH], [ATTACH=CONFIG]14639[/ATTACH] Thank you for the help, Best Jamal
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05-25-2012
05:55 AM
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How the ???transformation method??? is different from ???resample type???? I???m wondering based on which equations the ArcGIS perform sthe transformation. What is meant by ???adjust??? that exists as a transformation method (screenshot below)? [ATTACH=CONFIG]14573[/ATTACH], [ATTACH=CONFIG]14574[/ATTACH] What is the effect of the ???transformation method??? and ???resample type??? on the produced georeferenced raster? Thank you for the help, Best Jamal
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05-23-2012
10:12 AM
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Here, try this: SetNull(("StreamOrder"==1) & ( Lookup("StreamLink","count") <= 250), "StreamLink") Many thanks for the help. The problem wouldn�??t be resolved without the great help you offered. Best Jamal
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05-18-2012
10:32 AM
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Hi Jamal, Dot notation does not work in the 10.0 Raster Calculator. You will need to use the Lookup function. Something like this: SetNull(Lookup("Raster","COUNT") <= 250, "Raster" ) Using raster attribute other than 'value' in map algebra Lookup function in v10.0 Map Algebra: implementing dot notation in v10.0? Thank you for the answer Timothy. Sounds it is not working with the lookup tool! Please, have a look on the screenshot below. [ATTACH=CONFIG]14426[/ATTACH] The two raster I�??m working with are attached Best Jamal
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05-18-2012
08:36 AM
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4775
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What is wrong with this syntax when using the Raster Calculator tool? (9.3) I'm wondering what might be the correct syntax when using the ArcGIS 10 Raster Calculator tool compared to the old 9.3 Single Output Map Algebra tool? Two screenshots are attached. The first attachment shows what was correct when using the ArcGIS 9.3 Single Output Map Algebra tool The second attachment shows how I tried to do the same using the ArcGIS 10 Raster Calculator tool which did not work! What might be the correct syntax to such expression when using the Raster Calculator tool? Thank you for the help Best Jamal (Original post date 5/17/2012, edited to fix garbled formatting from old forums conversion by Curtis Price 5/18/2015)
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05-17-2012
08:22 AM
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