Latest Contributions by RamB

‎04-26-2019

Hi I would like to get the maximum of a field in a feature class. If no features are selected, I get the right value. But if some features are selected, I am getting the maximum of a field from within these selected features. However, I would like to get maximum of a field from the whole table i.e., from both selected and un-selected features. how may I do it? Thank you

‎09-12-2017

Yes, I did this already with geometric network. But nice to know about doing the same with service area solver. Thank you.

‎08-28-2017

I am using a street network of a large city with almost 6000 line features. When I am doing a network analysis, I get error of disconnected elements in the network. Is there any tool to identify such disconnected line segments that are not connected to any other line, or a couple of lines connected to themselves but not to the larger network. It is a large network and I am not able to visually find these. thank you.

‎07-27-2017

Hi, Yes, I did that, but since only one iterator is allowed in a model, I created a submodel. Here in the image, on the right is iterate feature class, then for each feature class, I am calling a sub model that splits each feature class and "copy features" to a shapefile. I think my data is getting overwritten, because i see the values of the fourth layer as the final output. Not sure where I am doing it wrong.

‎07-27-2017

Hi, I have a folder with 4 primary shape files. Each shapefile has a field "direction". I want to split each primary shapefile based on the field direction which has 4 (NSEW) directions. So the output should be 4x4 = 16 shape files. I am able to input one primary shapefile and use iterate feature selection to split "one" shapefile to "four" shape files. But I am not able to loop to the second primary shapefile ( of the 4 original files in my folder). how can I make this work? Please guide. Srirama

‎12-11-2016

Hi, I am having trouble in understanding the max and min in collapse dual lines to centerline. I have two lines running parallel to each other (representing roads in either direction). However, I am only interested in the centerline. I tried Collapse Dual Lines To Centerline. It seems to work for me but not always. the problem seems to be with stating correct values of max and min in the tool. I do no understand how to do this, because sometimes 40m max is good for me sometimes 70m. So one single value does not fix the whole network. Strangely enough, if I want to do them independently (say selected roads), it is not possible. each time the tool saves the result as a new file. It would have been great if the corrections are saved in the same file. My question is: how to understand a good value for max and min so that the whole network is fixed at once. I am always using the min value = zero. The help does not say anything except that both values should be positive and max is a compulsory value. This does not help much. Any help to understand these max min values and to solve such problems would be great. thank you Srirama

‎06-30-2016

This works for me. However, if it does not work for anyone, here is additional tip. Do all the above procedure in ArcCatalog and not ArcMap.

‎06-29-2016

Hi, I want to reclassify on a certain range of values in a raster. For values not belonging to this range, they should remain the same as the original raster. I need to do this for nearly hundred rasters and will be doing this again and again every few months. So, Any hints would be of great help. thanks Srirama

‎10-23-2015

Hi These are called desire line diagrams. This is very simple although not direct. You can save the OD matrix to have the following format (txt file) with a small excel macro. I did with a small dummy data as following Line 1000 1 0 50 50 0 0 1 1500000 550000 0 0 END 2000 1 0 50 50 0 0 1 3000000 3000000 0 0 END translated to OD matrix it will be Line Flow_value_to_destination1 1 first_point_of_line x_coor_Origin1 y_coor_Origin1 0 0 second_point_of_line x_coor_destination1 y_coor_destination1 0 0 END Flow_value_to_destination2 1 first_point_of_line x_coor_Origin1 y_coor_Origin1 0 0 second_point_of_line x_coor_destination2 y_coor_destination2 0 0 END read this text file with ascill to feature tool, and select polyline as output Later symbolize them with graduated symbols using Flow_value_to_destination as the size value of the polyline best wishes, Srirama Bhamidipati Transport Planner Delft - South Africa

‎09-30-2015

Hallo, Python is good way to solve. But if you don't understand it, you tend to force your data to fit into the requirements of the code instead of your own way of solving. If you understand python, you can go by above solution. If you do not understand python, read carefully the following page. It is in 9.3 version, but I am sure it exists in 10.2 version also. Basically you will need two columns with your stops. One column tells arcgis which route a stops belongs to. Second column tell the order or sequence number of that stop within a route. So if you can load a table in this format and ask to generate a route/ path. You will have your solution. I used to do this 10 years ago and it works perfect. I am sure it has only gotten better. So, read very carefully and understand this page: ArcGIS Desktop Help 9.3 - finding the best route Specifically focus on "Stop Properties" section and within this section, understand parts on- RouteName and sequence. best wishes, Srirama Bhamidipati Transport Planner Delft - South Africa

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Date Last Visited	‎02-01-2021 01:41 PM

My Ideas

Latest Contributions by RamB

arcpy: maximum of a field of a feature class

Re: How to identify disconnected line features in a large polyline shapefile

How to identify disconnected line features in a large polyline shapefile

Re: how to Iterate files and iterate features

how to Iterate files and iterate features

How to define max and min in Collapse Dual Lines To Centerline Roads

Re: Raster to Video Tool

How to reclassify portion of a raster

Re: Presenting results from OD Matrix

Re: Iterate different stops for different routes