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google utm zones; you'll find cool links like this one and this one etc...
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06-14-2012
08:03 AM
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Hardolph makes a great point, and I wondered if that's what John meant. I live and work in Utah and the western boundary of Utah/eastern Nevada is 5 minutes west of the UTM zone line. For that much (or little) the typical practice is to call the entire State in the same zone and project as such. As you might imagine there really isn't a whole lot going out there so any compromises in spatial data integrity are generally accepted.
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06-14-2012
04:27 AM
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Could you delete it at a system level? I'm not sure where the lock file is stored, but perhaps by popping the fgdb/directory you'd get the whole thing in one.
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06-14-2012
04:17 AM
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I am Also Using 2008 R2. So what are you using as the default schema? Is it something you created or are you using somethhing like the SDE user schema? I created a schema called... editors... Since SQL 2005 (I think, maybe 2003), various users can use the same default schema. Take a look here For your editors they need: Connect, Insert, Update, Delete and Execute permissions checked. I give my login data creator permissions as listed on that page. Hope this helps-
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06-13-2012
01:16 PM
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Hello, I know my question does not have an exact answer (it will depend on the region of the globe we're talking about), but I wanted to know what's the overlap between two UTM zones? Centimeters, meters, hundreds of meters? The same question applies for different latitude bands. I'll localize a robot in region close to the intersection of two zones and two bands (therefore I might be in 4 different zones) and would rather force the Lat/Long-to-UTM conversion to always use the same zone. I know the further I get from the meridian the less precise it will be, but what's an acceptable distance I could cross from a zone and still force it to project it into another zone? Again, I just need want to know an order of magnitude. If I get some 100 kilometers out from one zone into another, what's the magnitude of the error I should expect? If anyone has any references on where I could go about calculating all these more precisely, I'd appreciate. To my knowledge, utm zones don't overlap each other. Take a look at Melita Kennedy's classic publication Understanding Map Projections. Go to page 105 for a description; no mention of overlaps there. In the glossary, it lists: UTM Universal Transverse Mercator. A projected coordinate system that divides the world into 60 north and south zones, six degrees wide. Not sure I've answered your question, but hope this helps none the less
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06-13-2012
12:54 PM
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I am Currently testing the functionality of ArcSDE for use in a multieditor situation. I currently Have 2 Users added as people who can access the database. I cannot seem to get the multiediting functionality of SDE to work becasue when one person has the file open the other cannot make edits. So I have a few questions: 1. Are the types of Edits Limited? (e.g. only shape addition or modification and not adding fields to tables) 2. Are there any additional configuration steps besides adding users to the databbase (in SQL) that I need to perform to allow multiuser editing? In answer to your first question, to my knowledge, no editing types are limited. What version of SQL Server are you using? I have my users share a default schema that gives them read-write premissions. (I'm using SQL Server 2008r2). I also make them members of a a 'editors' group. That way I can assign an individual user r-w privleges in ArcCatalog to a specific feature class, or I can let all the members get at a feature class and only enter the group name once instead of a dozen users. Haven't had any issues. However, if you have two (or more) users logged an and making edits, and if they savethier edits, they'll probably get a warning about saving them again since others are logged on. Again, never had a problem, just save it again and they're good to go. Hope this helps-
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06-13-2012
12:36 PM
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Hi Joe, Paulo I was actually meaning the attached TBX containing a Spatial ETL tool. It is kind of advanced and may take some tweaking to get it right for your own data (it will be sensitive to coordinate system units, metres or feet etc). I touched the tool with 10.1 too so you may need that to open it. If you can't go there email me at [email protected] and I can send a 10.0 TBX. Regards Thanks for the clarification Bruce; I'm going to stick with v10.0 for the time being; check your email from me....
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06-13-2012
08:13 AM
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Hi Bruce, Can you share a link to the second tool you referenced here-"adding ranges to centerlines"? Thanks, I think Bruce is talking about this....
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06-13-2012
06:28 AM
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This is just a guess; looking at your roads layer the Defintion Expression is: "RoadClass " = '2' Does the field name really have that extra space in it? Cool app by the way! Hope this helps-
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06-13-2012
06:17 AM
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That's the thing; there's more than one way to skin a cat.....
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06-08-2012
04:55 AM
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A couple approaches come to mind: the Near command, described here or perform a buffer around each earmark point and then geoprocess the buffers into/with the districts. I'm purposely leaving this a little vague as I'd like your student to figure out the specifics....
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06-07-2012
10:48 AM
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Thank-you for responding, Joe. So, I used the 'Create Feature Class' tool in the 'Data Management' toolbox to create a polygon feature and set the processing extent to 50 and 52 south and north respectively and -7 and 3 west and east in the 'Environments' window. I left all the other defaults as they were. The process ran and a shapefile was created, though, it did not produce a visual polygon on the map. I then used this file to clip my shapefile of the UK but got an error message that the output was empty (error 000117). Any idea where I'm going wrong? Thanks so much! Laura Yep; you created a feature class, but you haven't created any geometry for the feature class. Try this: In ArcCatalog, delete the empty polygon feature class you tried to create. Next, staying in ArcCatalog, create a new polygon feature class. I prefer some flavor of geodatabase feature class rather than a shapefile. Give this new feature class the same spatial reference as the feature class you wish to clip. Close Catalog and open ArcMap. Add the feature class you want to clip. Add the newly created, but empty polygon feature class. Hopefully you have a line feature class of lat/long you can add as well. Start an editing session with your [so-far empty] new feature class as the target. Using the lat/long lines as your guide, create the polygon you want. Once you have it, stop editing and save changes. Clip what you want with what you just built. Make sense?
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06-07-2012
09:31 AM
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I have done the reading of the char. and spaces and while joining it STILL is fill with <NullLs HELP please Are you joining a spread sheet to a table or importing a spread sheet to a table? Either way, make sure the FIELD names don't have spaces or special characters.
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06-07-2012
05:19 AM
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This is probably an easy thing to do, but I'm stuck trying to figure out how to do it. Basically, I want to clip a shapefile of the UK by latitude so that I end up with a new polygon that is the 50-52 degree band of the UK. How can I do this? The clip tool requires an input file to clip by. Thanks! Laura You'll need to create a polygon feature class that uses to 50 and 52 degree latitude lines as the south and north edges, and the east and west edges would be what ever you need as well. This new polygon is what you'll use to clip the input featureclass by.
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06-06-2012
11:03 AM
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I have taken some Electrical Utility Feature Classes from our SDE server and put them in a new GDB on my C drive. I then add data, fields to the tables and add coded values to the domains. When we import it back into the SDE server it creates a duplicate domain. Is there a way to just overwrite the file on the SDE server. I don't think so. Domains are a property of the database, not the feature class.
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06-01-2012
05:25 AM
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