Latest Contributions by GordonSumerling

‎07-27-2011

Hi, I am using the findAndReplaceWorkspacePaths for ArcSDE databases in mxd's in a series of folders to update the 3 teir connections to Direct connections. The command I am using is: mxd.findAndReplaceWorkspacePaths(find_workspace_path=r"", replace_workspace_path=r"C:\Temp\arcsde_DIRECT.sde") This works fine if I want to replace all the connections in the MXD. I have the situation though where I have multiple people make mods to the mxd's and have the following list of connections strings: C:\Documents and Settings\Fred\Application Data\ESRI\ArcCatalog\Direct_vector.sde C:\Documents and Settings\Fred\Application Data\ESRI\ArcCatalog\Direct_raster.sde C:\Documents and Settings\Johnathon\Application Data\ESRI\ArcCatalog\Direct_vector.sde SERVER=production;INSTANCE=port:5152;USER=Johnathon; Connections 1,3,4 are all the same database while 2 is a different database. Is there a way I can wildcard search for the direct_vector.sde (1,3,4) connection without Explicitly stating the path? For example: mxd.findAndReplaceWorkspacePaths(find_workspace_path=r"*\ArcCatalog\Direct_vector.sde", replace_workspace_path=r"C:\Temp\arcsde_DIRECT.sde") and how can I use the findAndReplaceWorkspacePaths to update the 4th connection? Cheers Gordon

‎07-17-2011

Hello austrini, Both the migration methods (cadstral fabric builder and topology loader) require you to have the line work for your parels. Unfortuantely the only way I know of to create the line work if you do not aleady have it is to use the "Polygon-to-Line" tool which is part of ArcInfo. Cheers Gordon

‎07-17-2011

If you have the raw LAS files then intensity is an attribute that can be extracted against each return in the file. Much like the classification values or return values. However, if you have an .img file then the Lidar has already gone through processing and the intensity is no longer available. You simly have the DEM or DSM from the original Lidar. You will need to go back to the original Lidar files to obtain the intensity values.

‎06-08-2011

Hi Lisa, Pyramids are internal to each image and relate specifically to the image. An overview is the smaller resolution images that cover the entire dataset. These are external to the source images and in effect "join" adjacent images together. These are stored next to the file geodatabase sepeate from the original imagery. This is where the mosaic datset gets it speed from. You do need both to get the optimal speed from the mosaic dataset. HTH Gordon

‎06-08-2011

Hi, From ArcCatalog right click on the mosiac and select repair. The repair mosiac dataset form appears. For the Folder path Depth select how many levels down you want to fix the path for and in the Old Path the list of folders appears. Now add the new path and select OK. Easy!!! Cheers Gordon

‎06-06-2011

Hi, it sounds like you are taking a jp2, jpg, ECW or MrSid file and moasicing them to a new image format but not specifying the Compression value in the environment varaiables. Before you output the raster select the Environments button, then select Raster Storage. Finally the Compression setting. Here I would suggest you pick JPEG2000 and set the compression at 75%. This will proabably give you a mosaic of comparable size to your original images combined. If you are only going to use it in ArcMAP then you will get even more size reduction if you use the new Geodatabase format Mosaic Dataset. This leaves the images in their native format but builds pyramids (overviews) over the top of all 5 of you images. You could call it a pseudo mosaic as no new image is created but they are all displayed together as if they were mosaiced. HTH Gordon

‎06-02-2011

Jim, If you have loaded each DEM sepeately to the MXD then yes it will calculate the statistics for each DEM speately and then do a stretch. The toggle "From Current Display Extent" is only useful if the entire image actually fills the screen then it will calculate the stretch for that portion of image on the screen. The work around to this is to include all your DEM's in a mosiac dataset (new Geodatabase format at V10.0). When you display the mosaic dataset the statistics are then calculated as if it is one seamless image (DEM) and the toggle "From Current Display Extent" will work for entire mosaic dataset rather than on the individual images. HTH Gordon Sumerling

‎03-15-2011

Steve, Be aware, if ArcGIS detects statistics have been generated when it loads an image it will automatically stretch the image for you. You can turn this off though. Go to ArcMap options->Raster->Raster Layer. Set the stretch type to None. Once you have done this then it should not stretch any images again for you. Also, If you delete the corresponding AUX file with the image, this will remove the statistics and not do a stretch next time you load it. Cheers Gordon

‎03-15-2011

Hi Marcelo, There is a very good help file on upgrading your old 9.3.1 image service to the new mosaic format at ArcGIS 10.0. It preserves all the investment you have created at 9.3.1: Migrating an .ISDef to a mosaic dataset http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t000001vt000000.htm Cheers Gordon

‎02-17-2011

Oliver, While Image Server is delivered at ArcGIS 10, it was delivered as a compatibility release for existing Image Server clients. Esri is recommending that clients move away from Image server to the Image Extension and Mosaics. All future developments by Esri will be on the Mosaic raster format and Image Extension for server. As for your problem with Image Server itself, It could be a UAC problem you will need to use regedit and change the: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA value to 0 (default = 1) and then reboot. See the following article http://blogs.technet.com/server_core/archive/2009/01/19/user-account-control-uac-and-server-core.aspx regards Gordon

‎02-08-2011

Sisira, Check out the following white paper: http://www.esri.com/library/whitepapers/pdfs/lidar-analysis-forestry-10.pdf It will step you through taking lidar data from LAS 1.2 files through to a geodatabase terrain to perfornining analysis with 3D Analyst. Cheers Gordon

‎02-02-2011

Allison, I think the reason you are getting the problem is the ECW ddl's being used by ArcGIS does limit the size of ECW that can be clipped. Also because ECW is proprietary format ArcGIS is not allowed to write out in that format. I think you will encounter the problem with any application apart from an ERDAS application as they all use the same dll set for ECW's My suggestion would be to read the ECW into the new geodatabase Mosaic format. Then adjust the boundary of the mosiac. This will not touch the image itself but will limit the display area of the mosaic. It is in effect like a clip so it will look correct in ArcGIS. You can then perform processing and analysis on the image and it will only be inside the boundary of the mosaic. Reagards Gordon

‎01-20-2011

Hello Michael, Not sure how you are updating your footprints for your imagery but Esri have put together a really good help article for recalculating footprints: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t0000003w000000.htm My recommendation is load your rasters to your mosaic dataset, recalculate your footprints as per the recommendations of the help file, then define and build your overviews. It should work very well from that point Cheers Gordon

‎08-23-2010

Chris, I would be moving away from ECW's to JP2 format or GeoTIFF format imagery if you have the space. ECW's have two distinct issues. 1) As they are proprietry you need ERDAS software to create them. ArcGIS does not create these. 2) If you want to pass these images to your organization through ArcGIS Server then you need a special license from ERDAS. See the following technical article. http://resources.arcgis.com/content/kbase?fa=articleShow&d=36261 So what should you do? If I had the disk space then I would convert the imagery to GeoTIFF with 75% JPEG compression. If Disk space is at a premium then JP2 with 75% compression. GeoTIFF is pefferred as it is the fastest format to be read by ArcGIS. JP2 is computationally expensive and therefore slower to read. See the following help page: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009s0000008s000000.htm How you convert these is a little more tricky. Smaller ECW's, less than 1gb, can be converted using ArcGIS or FWTools (http://fwtools.maptools.org/). The ECW libraries delivered with these products are free but contain internal size limit which prevents conversion of larger files. To convert the larger files you will need conversion tools from ERDAS. Cheers Gordon

‎07-22-2010

Hello All, I have configured a copy of SQL Express to work with two databases, one has a Geodatabase/sde configured from ArcCatalog and the other has tables seperate from ArcGIS to which I want to make view to. The following web page describes how to create cross-database views this using the sdetable command http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Views_in_SQL_Server/002q00000025000000/ but SDE Personal and SDE Workgroup do not deliver the SDE commands which this web page describes. In my database I have created a cross-database view but the sde tables do not recognise this and thus the Geodatabase cannot register the table. Is there a way to acheive cross-database views in SQL Server Express that can be recognised by the geodatabase?

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My Ideas

Latest Contributions by GordonSumerling

findAndReplaceWorkspacePaths for ArcSDE connections

Re: Parcel Fabric Migration

Re: Intensity Return from Lidar

Re: Mosaic datasets: Pyramids AND Overviews?

Re: mosaic dataset - change path after the fact?

Re: Raster Mosaic, huge output file

Re: Stretched Raster Symbology not using current display

Re: Clipping .tiff image changes colors of original scanned .tiff image

Re: Migrating Image Server 9.x services to AG10 Mosaic dataset

Re: Image Server Installation Issue

Re: LIDAR analysis

Re: Issues clipping large ecw imagery

Re: Image of Raster Mosaic become invisible after Build footprint

Re: Converting ECW Files

cross database views in SQL Server Express 2008

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