Latest Contributions by JohnSobetzer

Check out http://gis.stackexchange.com/questions/11004/removing-small-spaces-between-polygons for a variety of suggestions. ... View more

The following won't do corners but perhaps it will give you something you could use or a link to one: http://blogs.esri.com/esri/arcgis/2007/04/17/how-to-produce-tint-bands-for-boundaries/ ... View more

I looked at the images, and clearly one shows up where it should, and the other comes in like any raster without spatial information, even after giving it the same coordinate system. I don't know what is happening.  The cell size changed dramatically, perhaps that is a clue.   Melita Kennedy from ESRI can figure this out, though.  Maybe you should sneak in and swap the computers some night. See http://resources.arcgis.com/en/help/main/10.1/index.html#//009t000000mn000000, in particular the following: You can permanently transform your raster dataset after georeferencing it by using the Rectify command on the Georeferencing toolbar or by using the Warp tool. You can also store the transformation information in the auxiliary files using the Update Georeferencing command on the Georeferencing toolbar. Rectifying or warping will create a new raster dataset that is georeferenced using the map coordinates and the spatial reference. You can save this as a BIL, BIP, BMP, BSQ, DAT, GIF, GRID, IMG, JPEG, JPEG 2000, PNG, or TIFF. ArcGIS doesn't require you to permanently transform your raster dataset to display it with other spatial data; however, you should do so if you plan to perform analysis with it or want to use it with another software package that doesn't recognize the external georeferencing information created in the world file. Updating the georeferencing will store the transformation information in external files�??it will not create a new raster dataset, which happens when you permanently transform your raster dataset. For a raster dataset that is file based, such as a TIFF, the transformation will generally be stored in an external XML file�??with an .AUX.XML extension. If the raster dataset is a raw image, such as BMP, and the transformation is affine, it will be written to a world file. For a raster dataset in a geodatabase, Update Georeferencing will store the geodata transformation to an internal auxiliary file of the raster dataset. Updating a raster layer, an image service, or a mosaic layer will only update the layer within your map document; it will not save the georeferencing information back to the source. The table below shows how each type of target will be saved. Georeferencing various rasters Data type Result Raster dataset Update Georeferencing will update the raster dataset. Raster layer Update Georeferencing will update the raster layer, and the source rasters will be unaffected. Image service layer An image service will not be updated on the server. After you Update Georeferencing you can either save the map document (.mxd) or you can create a layer (.lyr) file to save any georeferencing work. Raster product A raster product will not update the underlying raster dataset files. After you Update Georeferencing you can either save the map document (.mxd) or you can create a layer (.lyr) file to save any georeferencing work. Raster with a function A raster function will not update the underlying raster files. After you Update Georeferencing you can either save the map document (.mxd) or you can create a layer (.lyr) file to save any georeferencing work. ... View more

I didn't think you could create a tiff file with the georeferencing information in its header using the Update Georeferencing tool; one had to use the rectify tool.  But if that was true how to explain the fact your colleague's computer works differently from yours? Three possiblities come to my mind.  (Actually four - I'm wrong.) The first is that you are deleting the tfw or tfwx files but not the aux.xml file or .aux file.  But you would know that using Windows Explorer. The second is that your colleague is creating auxiliary files in a proxy folder instead of with the tif and his computer uses them to display the rasters.  This can happen if his computer can't write to the folder containing the raster of if the rasters are otherwise set to read only.  Copying rasters off a CD can do this.  Can you use Windows Explorer to copy just the tif your colleague has produced to another location, rename it and have it show up properly in ArcMap? Third, which may explain why your computers work differently but wouldn't explain how your colleague produces geotiffs without auxiliary files, is in the ArcMap options settings - Raster - Raster Dataset Use world flie to define the coordinates of the raster. ... View more

There are three things that come to mind immediately.  First, what Hardolph mentioned - your symbology.  For instance, if you are using categories make sure the all other values box is checked.   Second, you have a definition query on your layer being edited.  If you do any new poly will disappear.  Even after years of experience I still find myself getting caught by these every once in a while. Third, and I haven't tested it recently, but it was a long standing issue that you had to be able to see the entire polygon being created via auto-complete in your visible extent; if you zoomed in too far to finish it off it could fail. ... View more

If you don't mind starting all over again, use Windows Explorer to copy and paste your images to a new folder, or use it to rename the tifs in the current folder. ... View more

Use Editor -Move after selecting your points in an edit session. ... View more

If you are using Windows 8 and file history is enabled maybe you can find an older version.  In Windows 7 previous versions might allow the same.  I've never used either, yet, and it strikes me it might be difficult to use either with folder type entities like coverages which also have info tables, or file geodatabases.  But shapefiles with their limited files in number and sharing the same name, just different extensions, might be more feasible. ... View more

Other options include using the generalize tool for selected features if you are in an edit session and find issues, or using the Integrate tool on a dataset.  Use a copy of your data, or have a backup for Integrate in case you don't like the result, or use the Feature class to feature class tool to create a new one.  You will likely want to fiddle with the generalize value, or with the Integrate/Featuer Class to Feature class tolerances to get what you want. ... View more

You can use Wade's approach on polygon outlines as well, but the default symbol outline is a simple line, and you will want to use cartographic lines to have the offset option. Here's a link to three other options that can produce nice effects: http://mappingcenter.esri.com/index.cfm?fa=ask.answers&q=1116 You can probably find more suggestions like the latter simply by googling on something like the following: ArcGIS tint bands for boundaries ... View more

You may have to consider changing your symbology to get an offset in appearance.  Here's two links to threads on another forum that discuss the matter.  The first appears to be closest to your objective. http://gis.stackexchange.com/questions/37777/how-to-represent-overlapping-lines-in-arcgis-10-1 http://gis.stackexchange.com/questions/1493/rendering-overlapping-lines/1495#1495 ... View more

If the differences are quite small, you could use the Integrate tool giving your roads layer the priority, and using a tolerance  large enough to fix all or most differences without unwanted changes.  You might have to test some different tolerances, and then manually clean up areas where the tolerance wasn't large enough.  Use copies since this changes the inputs, and while it should only change your traffic flow line that might not always be the case. Alternately, you could do something similar by creating a geodatabase topology with rules requiring each layer to match and giving priority to your roads lines, and running a validation with a tolerance that works.  Again, I suggest using copies especially if you run the validation outside an edit session since you can't then undo the results. Another option if you have the paid version of ETGeowizards is to do a global snap of polylines. A different approach would be to use a copy of your road lines and attempt to transfer the attributes of your traffic flow to it, and then use it as your traffic flow dataset.  This might work better if the two lines are often outside any usable tolerances, but the different methods have their limits and will likely require cleanup afterwards.  See http://gis.stackexchange.com/questions/12575/how-do-i-correctly-perform-a-spatial-join-between-lines-that-travel-along-each-o for some ideas involving spatial joins, buffering and the near tool. The foregoing can fix a lot of differences at one time.  If you only have a few to do to start with or as clean up, you can manually edit the flow lines to match the road via snapping, reshaping or using a mix of copying and pasting line sections from your roads layer into your traffic flow and deleting the replaced sections.  You will need to get your attributes transferred from the replaced line section to the new which you could do using the attribute transfer tool, or by merging the new with an existing line section that shares the same attributes. ... View more

I hope the lines aren't totally random.  🙂 As Juan suggested you want to make sure you are dealing with good geometry.   I'll assume your problem is the lines have gaps that prevent polygons from being formed, and these are too large for the default tolerance to fix.    ET Geowizards has several line tools and clean polygon tools you could use to close those gaps as well as the option to adjust your tolerance.  I suggest you start reading the Build polygon, clean polyline layer and dangling nodes notes and then follow the recommendations therein.  The gaps may be such that you have to do some manual fixing, but the Export Nodes wizard can at least point you to places where you have gaps. Once your polygons are built then you have to get the attributes into the polygons.  I'm not sure from your text where they are stored but check out a spatial join of either points or the lines to the new polys. ... View more