Latest Contributions by EricRice

Hi Eric NIM060238 looks like it has missed the ArcGIS 10 SP1 list of issues fixed at http://downloads2.esri.com/support/documentation/ao_/10.0_SP1_Announcement.pdf - is there any chance that it can be included, please? - Graeme Graeme, NIM060238 was targeted for SP1.  However, there isn't a simple solution and the issue remains unsolved at SP1.  We will continue working towards the fastest resolution possible. Regards, Eric ... View more

Go to ArcToolbox > Conversion Tools > To CAD > Export to CAD.  Here is a link to the documentation for this tool. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00120000001n000000.htm Regards, Eric ... View more

Eric, The Add XY Coordinates tool will add POINT_Z and POINT_M fields when the input feature is z- and m-enabled. It's located in Data Management Tools > Features.  If you don't want the X, Y fields you can delete them and keep just the Z. In ArcGIS 10, the Calculate Geometry has the option to get the Z for a point dataset. I tested your code sample and it worked fine for me so there is nothing wrong with that.  What does your dataset say in the Shape field?  And how did the data get the Z values originally? Regards, Eric ... View more

Thank you for the input and the link.  Each time I run the tool, it says it's 100% complete, but then it stops, does not close the progress window, and enters a "0" value into the feature class' attribute table for SLength.  The line segment is entirely contained by the DEM, so I'm not sure what's wrong.  Any thoughts? Hi Marianne, Are you using 9.3. or 10.0? Is the data in a projected coordinate system?  Is the line and DEM in the same coordinate system?  Note, they don't have to be the same, but it would be a bug if that was why it wasn't working.  I've run the tools in both versions and they always complete for me.  Is your line a shapefile, PGDB, FGDB, or SDE feature class? Have you tried using other datasets, or making a simple 1 line feature class to test with on a small DEM? ... View more

Jamie, Do you have access to ArcGIS 10?  Its pretty straight forward in that version.  Can I ask why you want nodata pixels where your lakes are?  You want to keep everything but the lakes, right?  This can probably be done with map algebra with just a Con and SetNull statement if you're not using ArcGIS 10. Regards, Eric ... View more

Hello, You don't have to convert the features to 3d and do the calculation with 3rd party tools.  In ArcToolbox > 3D Analyst Tools > Functional Surface, run the tool called Surface Length.  This calculates the surface length of each line in a feature class based on a raster or TIN surface. The surface length information is stored as an attribute of the input feature class.  For your benefit, I'm including a link to How Surface Length works  This will help you determine and understand how sampling distance impacts the length calculation. If you're using ArcGIS 10, this tool is deprecated, and you will want to run the Add Surface Information tool. Regards, Eric ... View more

Jakub, The pattern you see in the hillshade is likely inherent to the DEM data.  The striping is described as a product of data collection technique known as manual profiling, and a solution for eliminating the striping is to use the Fast Fourier Transform (FFT). http://seamless.usgs.gov/faq/ned_faq.php#seven "GPM2 DEMs can have an appearance of a grid pattern when a shaded relief graphic is produced from the DEM." http://www.ctmap.com/assets/pdfprojects/destripe.pdf  Check out page 3; Los Indios Canyon, NM Unfiltered DEM (Shaded Relief) vs the Destriped DEM result. These links discuss USGS DEM's, but the same probably applies to the GeoBase data. As for getting better (non blocky) contours with the data you have, I would recommend setting a very small offset to the Base contour parameter.  For example, if you're base was 0, then you should input 0.0001 for this parameter.  The contours will no longer pass exactly through the cell centers which was the probable cause for the stair step look.  Check out the section, "Controlling contour quality" in the link below.  This method should work better than generalizing the contours after creation. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/How_Contouring_works/009z000000vq000000/ ... View more

The ID to track the ECW issue is here. NIM060238: ECW is temporarily shown as invalid dataset. Please note, the Raster Format Patch recently released was not meant to resolve this issue. To see the issues resolved by the patch, read the section, "Issues Addressed with this Patch". http://resources.arcgis.com/content/...17&MetaID=1648 The ECW bug has been given high priority by the User Advocacy Group and we continue to work with Development to get the issue resolved as quickly as possible. Regards, Eric ... View more

Hi Larry, File Geodatabase should behave the same in ArcScene.  Would you be willing to contact Esri Technical Support to report it and give us a sample dataset to repro? I created 3d lines in FGDB and as Shapefile.  The tube is the exact same and both are selectable for me.  Are you using 3d simple line symbol with style set to tube?  Maybe we are not doing the same thing. Eric ... View more

Jared, Convert your raster data to ESRI GRID format.  In windows, navigate to the GRID (represented by a folder with the GRID name).   A GRID is composed of many files.  You want to open and edit the file, "prj.adf".  There should be an entry for Units already; maybe even ZUnit.  If ZUnits is not there add it so it looks similar to below. Projection    WGS_1984_UTM_Zone_11N Datum         WGS84 Spheroid      WGS84 Units         Meter Zunits        Meter Make sure the observer projection and the GRID projection are the same.  It should work once ZUnits is defined. Regards, Eric ... View more

Hi there, Try performing a spatial join.  It should work great if there is only 1 point per hexagon.  If there are more points you will get the attribute of the first point encountered.  You can do this by right clicking the polygon layer > Joins and Relates > Join.  Switch the join type to be based on spatial location rather than by attribute in a table. In section 2, choose the second radial button to get all the attributes of the points that fall inside (or are nearest) to the polygon. If you need to script it or just want to use geoprocessing, there is a Spatial Join GP tool.  This tool provides more options than doing the spatial join manually.  Of particular note, it has a parameter where you can specify to join 1:1, or 1:M.  If you have multiple points in a single hexagon, and you need the attributes of all the points, you should run the GP tool with 1:M option.  The GP tool also provides field mapping in case you don't want all of the points attributes.  I understand you are only interested in a single value (attribute) of the points so GP may be the best way to approach this.  The tool is in ArcToolbox > Analysis Tools > Overlay > Spatial Join. Here is the documentation on Spatial Join Hope this helps. Best Regards, Eric ... View more

Hi there, Could both of you contact Esri Technical Support?  If you're outside the US, please contact your local Esri distributor.  We would like to get samples of the data you are having a problem with.  I've run that tool successfully many times, so a sample dataset that can repro the issue will go a long way to helping us resolve the problem you are experiencing. Thanks, Eric ... View more

Hi Ryan, There are multiple ways to create contours in ArcGIS depending on the version you are using.  The screenshot in the post above shows the Contour tool available on the 3D Analyst toolbar.  There is also a geoprocessing version of the tool (for scripting, building models, or single executions) available in ArcToolbox > 3D Analyst tools > Raster Surface > Contour. If you don't have 3D, you have to have the Spatial Analyst extension.  Pre 10, the Contour tool is available on the Spatial Analyst toolbar (similar place as the 3d toolbar) and also in ArcToolbox.  In ArcGIS 10, Contour is only available from the Geoprocessing Environment.  For Spatial go to ArcToolbox > Spatial Analyst tools > Surface > Contour. For access to Contour from 3D Analyst, the location in ArcToolbox is unchanged from 9.3 to 10. Regards, Eric ... View more

Hi Pascal, Lowest Postion describes the position of the inputs with the lowest value, hence order of inputs is relevant.  What you want is Cell Statistics with the Minimum statistic type.  Order of inputs is irrelevant and calculates the minimum (smallest value) of the inputs.  There is no need to have Min and Cell Statistics with the Min option since they are essentially the same.  The toolset was cleaned up in 10. Cell Statistics Best Regards, Eric ... View more

Hi Jan, From your description it sounds like the tool has a problem.  Could you contact Technical Support so we can work with you to get a reproducible case?  For now, try using the Mosaic tool.  Take one IMG as input and set the other as the target.  Regards, Eric ... View more