Latest Contributions by ChrisDonohue__GISP

I don't have an exact answer, but I've seen several references in the past to Snow Removal processes that ESRI supports.  It appears that the various solutions employ more than just Network Analyst.  Here's some of them: Solutions of Smart Snow Fighting Managing GIS Operations for Snow Removal for the City of Columbus—Warrior Style | ArcNews SnowCOP | ArcGIS for Local Government There is also an older thread on this: Snow Plow Routing One specific issue I can think of that will come up with using purely Network Analyst is that the routing process doesn't have a restriction to limit duplication, i.e. the default routing process assumes all vehicles that can be routed can use all roads, so it will have multiple vehicles travel across (plow) the same roads.  There are probably ways to get around this, but "out of the box" it has some limitations, so other software/coding/add-ons will be needed to overcome this. Chris Donohue, GISP ... View more

^^^^^ Go with what Curtis said. Chris Donohue, GISP ... View more

Question - do the inspections need to be determined based on the road network?  I ask as there are several processes for allocation, but they commonly do not take into account a street network.  Since you tagged this with Network Analyst, I assume you want the network taken into account, but just want to verify that. Chris Donohue, GISP ... View more

If the topology check for Must Not Have Dangles turned up many issues, you may want to consider running the Snap (Editing) geoprocessing tool: ArcGIS Help (10.2, 10.2.1, and 10.2.2) Notes: Back up your data first, as this tool modifies the input file instead of creating a new output. It will take some experimentation to come up with the snap distances that solves the most issues.  However, it is unlikely that this tool will solve all the issues, so plan some time to resolve manually the leftovers. Note this point from the Help:  When snapping features in one feature class to features in the same feature class, the feature with the lower Object or Feature ID will usually be snapped to the feature with the higher Object ID. For example, if points OBJECTID 1 and OBJECTID 2 are within the snapping distance, the point with OBJECTID 1 will be snapped to the location of the point with OBJECTID 2 (and not vice versa). Use the Sort tool to rearrange features so this snapping behavior can be controlled.  ArcGIS Help (10.2, 10.2.1, and 10.2.2) Chris Donohue, GISP ... View more

This issue is still around in ArcGIS 10.2.1.  I tried to run Simplify Polygon this morning and could not find a place to enter the Tolerance Luckily, the workaround advice offered by Emilly Foster on batch processing the tool works (see above in thread). Chris Donohue, GISP ... View more

Sorry to muddy things up, but there appears to be another "flavor" of NAD83 out there: Latest version of North American Datum The United States National Spatial Reference System NAD 83(2011/MA11/PA11) epoch 2010.00, is a refinement of the NAD83 datum using data from a network of very accurate GPS receivers at Continuously Operating Reference Stations (CORS).  Source:  North American Datum - Wikipedia, the free encyclopedia Melita Kennedy Chris Donohue, GISP ... View more

One caution - stay away from using the ObjectID as a field to join to, as while it is a unique key, it automatically gets renumbered when certain processes are done.  For example, if you select several features and save them out to a new feature class, you will find that the ObjectIDs have changed in that new feature class compared to what they were originally for the same feature. If there isn't already an appropriate aternative unique field already in your tables, one workaround is to create your own unique ID field from the ObjectID before making changes/processing.  Make a new field, then use Field calculator to populate it with the ObjectID values.  Note - If you add more features, be sure to remember to populate this field with appropriate new IDs, as it is static. Chris Donohue, GISP ... View more

This may prove an interesting challenge for the Python guru's here on GeoNET.  Adding  Python Imagery and Remote Sensing Chris Donohue, GISP ... View more

One workaround (and I believe this is what David Barnes is referring to) is to take screenshots of items in your map that correspond to what you want in the legend.  Then use an image program like Photoshop to cut them up into small images (say jpgs) of each item.  Then when you build your legend, insert the appropriate image next to each legend item.  Very manual, but well worth it if you really want your legend to correspond to your map in this situation. Chris Donohue, GISP ... View more

It all comes down to what you are currently doing and what you forsee doing.  Can you elaborate on where you are at and where you are going? Chris Donohue, GISP ... View more

It can be difficult to tell if the program is still running or if it crashed.  It is not uncommon for a geoprocessing tool to keep running for quite a while and even have the message "Not Responding" show up, yet it is actually running fine. My guess would be since you already checked in Task Manager that it appears to be running that it really is still running, and that you have a very large dataset you are crunching. Another way one can sometimes get a sense of where it is at is if one ran the process with the Geoprocessing Options for "Background Processing" unchecked (disabled).  This would put the message window up as it runs, which sometimes allows one a sense of the progress. Chris Donohue, GISP ... View more

It depends on  how you are accessing the data.  If it is from a Service, you may not be able to change this behavior yourself. However, if you are viewing a feature class in a mxd, then you can usually alter it.  For example, a Scale Dependency may have been set, which suppresses the data display outside a preset scale (usually to improve performance and to prevent the display from getting cluttered). ArcGIS Help (10.2, 10.2.1, and 10.2.2) Chris Donohue, GISP ... View more

To add to  Dan Patterson suggestion, do the burning in on the DEM and then rerun your Flow Accumulation. Here's some info on burning in: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&ved=0ahUKEwjqufTv98HLAhXBUyYKHfyXAsAQFghQMAY&url=http%3A… http://www.faqoverflow.com/gis/18595.html Chris Donohue, GISP ... View more

Some questions to clarify what you are after and what environment you have available to do this with.  There are several ways this can be done, but it will vary depending on how you want to do it and what resources you have. If I am understanding this correctly, the intent is to have the administrative area name populate automatically based on where you add the point.  First question is, will this be while you are editing or can this be populated afterwards? Which of the many flavors of ESRI software are you using?  ArcMap?  ArcGIS Pro? Which Version of the software do you have? Chris Donohue, GISP ... View more

To expand on what Adrian Welsh is suggesting, if you decide you want to convert all the shapefiles to feature classes in a File or Personal Geodatabase, and you have many of them, there are a couple of ways to automate that process:   If you are not experienced in programming, you could use Modelbuilder.  Tutorial: Creating tools with ModelBuilder—Help | ArcGIS for Desktop   If you are experienced with programming, it could be done using Python  What is Python?—Help | ArcGIS for Desktop Also, if you are not sure if you want to consider using shapefiles or not, here's some info that may help in making a decision: Geoprocessing considerations for shapefile output Chris Donohue, GISP ... View more