Latest Contributions by RobertBorchert

Do you want the pipeline to follow existing roads? Can it just cut across fields etc...? I would suggest using Google Maps and placing a marker and getting driving directions to the next location and from there to the next location I need to find the shortest distance between three towns, and suggest the cheapest cost to build a pipeline that will cross these 3 towns. I have 25 towns total and data for each of them: roads and cost based on lenght. I want to know if it is possible to solve this with network analyst since I had tried and I have to enter an start and end point (or an incident). In this case a don't have references, only points (or the towns locations). How do I do this? Data: 25 towns locations Road network between towns Need: shortest distance for 3 towns out of the 25 towns the cost wil be based on the length of the route. ... View more

Where are you looking for.  Different options for different locations. Here in Minnesota we have standard historical images going back to 1991 available.  They are pretty scary to look at compared to what we can get now but back in they day they were the cats meow. Robert,   Your point about the file size greatly expanding when we change from the Sid format is really helpful. I'm wondering if the increased file size, in another format, will make it render faster. I agree with you that accessing the ArcGIS.com imagery is an option, unfortunately, we're dealing with historical imagery. From what format, other than SID, can we tile the images into smaller chunks? would spatial analyst allow us to tile? Ken ... View more

You really cannot do much with SID's. If you convert a SID to another format it will uncompress it and a 5 gb sid could end up being 20 gb or more. I would recommend if you have online access to use the ESRI online air photos. SID's are actually getting kind of old.  In my state they have not been updated since 2004 due to other methods being available, such as online.  What I don't like about online is that if you are not online you don't have any photos. Robert,    I hadn't thought of setting a scale range for a raster; that's a good trick to keep in mind. I realize that MR Sid is an image format. What format would you recommend changing the raster to to enable us to change it to a format that we can tile?  Thank you for the prompt help, Ken ... View more

There are a number of ways I would approach this.  Since each of your polygons is the same size IF you don't have a lot of points to do this to.  (by not a lot I mean less than 200 or so) the most simple method may be to simply create one polygon of the correct dimensions and the copy paste that polygon and move them such that the points are the center of the polygon. Now I have a way that is a lot more involved but would allow you to do it to thousands at a time. The idea here is to create the polylines of the polygon that each have a unique identifier from the point feature. Calculate the XY of each point.  Create 4 new sets of XY to represent the 4 corners of the polygon.  Call them something you can remember and that makes sense.  Something light URXY, (upper right XY) ULXY, LLXY and LRXY Manually create the first polygon.  Then generate a centroid.  Using the measurement tool in the same units as your projection (i.e. meters, feet etc...) The distance to the North edge of the polygon and to the east edge of the polygon IF you want to be as accurate as possible use the COGO tool to generate straight lines to the edges and then trim them to the edge and record the distances. For that matter generate the polygon using the COGO tool to make a polygon the exact size you want. Now your X,Y may look like this   10000, 10000 in meters (I am using simple numbers for the example).  For the upper right you subtract 124 from the X and Add 172 to the Y giving a new corner XY of 9876,10172.  Do the rest for the other 4.  Draw it out on paper first to make sure you are adding and subtracting the correct way for each corner. Now you will do the next step 4 times.  Use the XY to polyline tool and generate lines from URXY to ULXY, then URXY to LLXY, and LLXY to LRXY, and LRXY to URXY.  The XY to polyline will allow you to save a single attribute to the new feature.  Use the polyline to polygon tool to create polygons You may need to export the Point feature to a .csv layer to use the xy to poyline tool I may not have explained this properly but doing it this way should allow you to create thousands of polygons in about 30 to 45 minutes or less. Hi Guys , i am not sure if this is in the correct place. i hope so. What i would like to do is take some point data and convert it into polygons . i would like each of my polygons to be 172 metres long and 124 metres wide i was wondering if there is some where i can do this in the conversion procress. i have look at certain tools but do not see an element for inputting this. Although i am very new , so maybe i m missing something Does any one have some tips Thanks Jack ... View more

Because of the nature of SID photos you may not be able to do that.  Issues with them rendering fast or slow are more of a hardware issue. I would suggest changing the visible scale range instead so the Sids are only visible when your  scale is less than 1:10000 or so.  Us that as a start and increase it as you observer performance. SIDS are a highly compressed data format. I have a large Mr Sid raster and would like to make it render faster in ArcMap. I could get access to the Spatial Analyst extension, but before I go to the considerable trouble to get the extension, I'd like to query the group about whether that extension is what I should use to break up my Mr Sid into 4 chunks or tiles. What other app or workflow should I use? My understanding is that ArcMap won't do the tiling, itself, without degrading the raster resolution. Ken ... View more

No, you will probalby have to do it in ArcGIS desktop.  I have not tried it online. Thnks for reply Does ArcGis Session means ArcGis online developer login ?? I am looking to retreive xy coordinates not i will be passing to map ... View more

Open your shapfile in an ArcGIS session. Add two new fields to designate X and Y for their type make the Double Right click on the X attribute and Select Calculate Geometry.  Select the option to calculate the X and do it again on the Y for the Y Hi all, I have us streetlight data in dbf and shp file format, i have consume it as new feature layer and now the the requirement is that they need lat-long of the street id available in db when the user clicks on the spot lights shown on map in popup..Please Can anyone let me know that online do we have any service available or in the feature layer url can we pass any param to retrieve the lat-long on the user click... RG, Asha ... View more

There is something else wrong in your system. I do this quite often and it works without issue. However, yes you should use the coded value and the the descriptive value. Do this happen to all features or just this one? You may simply need to rebuild the feature class and load data back into it to clear out the error. Or you could select your features and then change the values en mass in the Attributes Window. ... View more

I know Python is the next logical step in my GIS progession.  But right now I am pretty ignorant. I tried pasting the code into the the label expression (maplex)  it said it was a valid code no features found could not verify expression.  I don't have it set up with any definition queries and all features are showing. In the ArcMap Drawing Errors window that popped up it then says General Function Failure. Too few parameters.  Expected 3 Any suggestions on what I am doing wrong. Or should I be using field calculator to fill a field with this? Cool idea Robert! Try this: def FindLabel ( [Label], , ,):   s='<CLR red="'+str( )+'" green="'+str( )+'" blue="'+str()+'">' #should return something like: <CLR red="255" green="00" blue="00'">   s+=[Lable]   s+="</CLR>"   return s ... View more

I have had better luck downloading the Tiger center line data set.  There are two versions the one that is ready for geocoding and the one that is 500% more complete but takes a lot of work to set up. The difference is one has only 1 instance of a road and has the address ranges built in. The other version has all instances of a road.  Example.  In my town State Highway 23 runs through it.  Along that stretch it changes names 3 times.  i.e. Division Street, Broadway, Roosevelt Road before leaving town and becoming just highway 23 again. To make matters worse not all segments are the same length for each instance of the name. Then there is a separate table that has address ranges and codes to link them to something in the center line file. Anywho, it is a lot of work to set up but it more accurate. Then you just create your own address locator in Catalog Hi All, I geocoded a dataset with around 500,000 addresses on my computer, and my team member validated the geocoding results using the same address locator and geocoding options on her computer. A small number of the addresses (0.4% among all addresses) in the dataset have unmatched X and Y coordinates from the two separate runs. Most of the unmatched geocoded X and Y coordinates are several hundred feet apart or even closer. The address locator that we use comes from the ESRI StreetMap Premium. Does anybody have an idea about why this happened? Thanks! ... View more

Use Join by Attributes and then perform the update and remove the join. Hello, I am trying to produce a model that will select 2 attributes that are related through a user input (or pairs of points in a excel file), and create a new shapefile from the selected 2 points. and proceed using these two points for the rest of the model. Thanks ... View more

Reset IE and try again. QUOTE=kdarling;374155]We have a custom tool that does not work in Internet Explorer but will in all other web browsers.  We have tried using Fidlar to see the results but none return when using IE.  The site is located in our dmz setup to use a proxy server.  The site is located at http://oms.tcectexas.com/oms.  The tool is the green refresh button located at the bottom right of the legend. ... View more

I wonder why you are trying to do it in model builder. However I may not work because model builder may not able to work the geospatial transformation correctly. Hello all, I am trying to convert a reclassified raster file into a polygon. When I do so within the model builder environment, the resulting file does not line up with the raster file. I have tried creating a new model and playing with the environmental settings - changing the snap raster, etc. When I perform the conversion outside of the model builder, it works perfectly. Does anyone have any idea why this is happening only within model builder? I have attached an image to show how the polygon and raster are not aligning. Thanks, Nicole ... View more