Latest Contributions by JohnSobetzer

‎05-24-2012

I should have thought to add a visual example. Thanks for asking. I'll attach a rather straightforward version of the problem that doesn't involve any interaction with other buffer polygons. These additions to the buffer area have typically been done by eyeball, then checked for distance. In this case I ran an Identity of the buffers with the NF, (which is needed to get acres since there is also an acres consideration), exported the overlaps to a temporary shapefile, moved them to the edge of the buffer, cut them a bit, and then used the construct features tool (taking into consideration existing polygons option in 9.3.1) to add them to the buffer.

‎05-23-2012

We need to create buffers around various polygons, but non-forested polygons cannot be a part of the buffers. This is not a simple erase problem; the buffer needs to be "expanded" to avoid any NF polygons within it, treating them in a sense as if they were space that didn't exist, to get the required buffer distance in forested areas. Normally this buffer reshaping is easily understood but manually intensive, a one by one process with a considerable subjective component and some trial and error, as additions are made to the outer edge of the buffer approximating the excluded shape, such that imagined lines running perpendicular from the outer edge of the buffered polygon would roughly go through the same length of feet of forested polygons as the buffer distance. These NF polygons may abut the buffered polygons but more likely they don't, they may occupy just a portion of the buffer, their shapes are often quite irregular, and they often extend outside the initial buffer to create areas that can't be expanded into either. At least we don't have to factor in 3D. The buffers do need to have attributes that link them to the buffered polygons. We have ArcInfo and Spatial Analyst. An automated and repeatable "objective" process that worked pretty well would be preferable. After looking at a discussion of how Maplex places labels by looking for "white space" outside features with a higher weight or labels of a higher priority, I wondered if a buffering process could be created that would avoid excluded areas. To my quite limited abilities this seems darn near impossible, but I've seen some answers on this Forum and Stack Exchange that have solved other issues I couldn't grasp either, so I'll ask.

‎05-02-2012

[Field 1] = [Field 2]

‎04-25-2012

If you use a Page Definition would that give you a way to show the focus? For instance you might add a layer and give it different symbology to make it stand out, or have it labeled.

‎04-20-2012

What if you set your segment deflection (right click menu) to 0?

‎04-02-2012

After setting up a Data Driven Pages project look at the Page Definition option in the Definition Query tab of a Layer's Properties.

‎03-06-2012

Will this help? http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//001t00000009000000.htm I haven't run into rads very often and I've forgotten exactly how I handled them in the cogo tool. Like most things I fooled around with the different options, in this case providing for a curve in the drop down on the left, hit enter and looked at what I got. Finally I got what I wanted, and then I finished the work and as is obvious now, forgot exactly how I did it.

‎03-06-2012

So the conversion worked, but the subsequent clipping of it produced the polygons? What about using the region polygon to select annotext, and then exporting those to their own layer as a workaround? Or using a select query of attributes, if that will work, to do the same?

‎03-02-2012

I've never seen that error before. Are you using the tool within ArcMap or ArcCatalog? I faintly recall problems doing it with ArcCatalog. It's worked fine for me in ArcMap except for the leader lines. An advantage of the ArcMap approach is you can select the coverage annotation ahead of using the tool, and then it will only convert the selected annotation.

‎03-01-2012

There is an import coverage annotation to geodatabase tool in the conversion toolbox. It can do a nice job with text but any leader lines turn into squiggles. It is a known bug that will probably never be fixed. I can't recall if 9.1 Arcview could still edit coverage tables via the calculator outside an edit session, but if it can you could select the annotation you want, calculate a value for those records, and then use a definition query to limit display to them. If 9.1 can't edit the table but you have Arcview 3x anywhere you could use it to add a field and calculate into it during an edit session.

‎02-28-2012

Radian. You can Google on it but here's two general links to get your started: http://en.wikipedia.org/wiki/Radian http://www.purplemath.com/modules/radians.htm For your purposes you want to go to Desktop Help and in the cogo section there is stuff on radians.

‎02-17-2012

I've had this happen over the years in different versions, and so I copy the layers I'm working with and paste them into a new project, edit there, save and reopen the original with the layers updated.

‎02-17-2012

If you run a dissolve without setting any dissolve fields and unchecking the create multipart features, then add an area field and calculate it, will that work?

‎02-13-2012

You might look at this: http://arcscripts.esri.com/scripts.asp?eLang=&eProd=&perPage=10&eQuery=raster+footprint&Submit2=Search

‎01-27-2012

There are a few possibile explanations for the lost edits that I've seen on the forums from people including: 1) bad geometry, 2) layer locked by another instance of ArcGIS, 3) corrupted project or template, 4) accidentally saving the project not the edits, etc. You might Google on something like ArcGIS edits not saved. Sometimes the edits are there but the symbology or definition query doesn't show them; bringing them into a new project might show them. Another possibility is that they weren't saved to the hard/network drive, which might only happen for sure if you closed editing. Something similar might be happening if you tried to export your shapefile or the attribute table, it could go out without the "saved" edits. I don't know where they are stored, perhaps in a cache or stack somewhere. I've often lost the last few edits while others that had been saved were in fact saved. So I try to remember to close editing every so often. I know of no way to recover truly lost edits.

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Date Last Visited	‎06-09-2022 01:50 PM

My Ideas

Latest Contributions by JohnSobetzer

Re: reshape buffesr to avoid and reflect excluded areas?

reshape buffesr to avoid and reflect excluded areas?

Re: Select by attribute

Re: Style features based on current DDP page?

Re: Snap to same bearing (cutting a polygon)

Re: Printing Data Driven Pages While Toggling Layers Off and On

Re: What Does '(RAD)' Mean in Metes and Bounds?

Re: Clipping annotation to a polygon in coverage feature class

Re: Clipping annotation to a polygon in coverage feature class

Re: Clipping annotation to a polygon in coverage feature class

Re: What Does '(RAD)' Mean in Metes and Bounds?

Re: Snapping mysteriously stops working...

Re: Merge Adjacent/Connected Polygons

Re: get boundary of a raster

Re: system crash. all 'saved' edits now missing

Re: FIX YOUR TRACE TOOL!!

Re: show in the map the data from attribute table

Re: Recommendations for active community or group?

Re: True Curves = True Evil

Re: PDF export increased file size