Latest Contributions by RamB

‎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

‎09-28-2015

Hi, You can generate random sequences between FA...F using excel, save them to a notepad file and then use the route builder to build routes. I think this should work. regards, Srirama

‎06-04-2015

Hi Do not see this as a solution already. Instead imagine what I am trying to say. I may be wrong, but imagine For linear referencing: You first make each stream an linearly measured segment as one would do in Linear referencing. Lets say, you convert your zone layer into a line layer. You somehow then select all A zones (A lines now), and get the intersection points with stream layer. These points form «events» as is referred in linear referencing. And see Material line below figure: instead of asphalt (zoneA) Concrete (zoneC), imagine them to be zone A, zone C, zone A of your zones. This will happen because you have intersection points of zones along your stream. for each zone you will have a starting and ending point along the stream (similar to events used for dynamic segmentation in linear referencing) Since your streams are now linearly referencing with a measure, it should not be difficult to know upstream and even downstream zones. Just an idea, may be clicks another idea for you. Srirama Bhamidipati Delft -South Africa ESRI ArcGIS 10.2

‎06-04-2015

Hi, Ok, I thought it is a small dataset. In case of large dataset, I would suggest using linear-referencing. It takes time but will give you long term solution. Please have a look at linear referencing. And more ideal for such upstream downstream questions is utility analyst in geometric networks. Srirama

‎06-03-2015

Hi, First this is not network analyst question Second, if i understand u enough, the solution is simple if you make the stream a wider using a buffer distance we can use spatial join to solve this issue. Make sure to get the centroids of your zone areas. Then do a spatial join of the stream with zones. All the zone attributes are now in stream polygon. you can then do a simple sorting on y coordinate of the zone centroid in the joined table. You can even bring this table to excel and do multiple field sorting. You can extend it to make it as complex as u want by sorting a cross vector of x,y coordinates. note:i am assuming u know how to use spatial join regards, Srirama Bhamidipati Delft -South Africa ESRI ArcGIS 10.2

‎04-28-2015

Hi Kishor, Thanks for the details. Yes, I am thinking likeswise. Learning to do a model builder. Let me see if i succeed. Thanks anyway. thanks Sriram

‎04-27-2015

Hi Dan, Thanks for your response. Basically it is weather Data from weather stations. I am interpolating using IDW for other places in the area. So I have 365 days (rasters). I want to use this data in another simulation software, but loading 365 rasters is too hard on that software. But that other software can handle a polygon with 365 values ticking through each simulation step. So if somehow I can manage to get a polygon layer with 365 values in a field storing that attribute, I am good to go. Hope this helps? thanks Srirama

‎04-27-2015

Hi, I have about 300 rasters (IDW surfaces). I would like to collect all the cell values located under a cell from all the cells below in this stack of 300 rasters. All rasters are same extent and same cell size. For example we have 5 rasters. I have a polygon layer that exactly overlaps the raster (actually created using raster to feature tool) . Lets assume a polygon(cell) location in this polygon layer, below this polygon are 5 rasters and hence 5 cells. I want to store these 5 cell values as attribute of the polygon cell, so that the attribute table for this particular polygon cell reads (3,10.4, 8.9,2.3,1) These are the cell values of the cells from the rasters below. How can I do this? thanks, Sriram

‎11-21-2014

Yes, this can be done. I remember answering such a question a couple of years ago. Please search the forum on my name and also there was a response of Jay from ESRI. regards,

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Date Last Visited	‎11-03-2023 04:39 PM

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Latest Contributions by RamB

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

Re: Iterate different stops for different routes

Re: Can I summarise network lengths upstream of a zone?

Re: Can I summarise network lengths upstream of a zone?

Re: Can I summarise network lengths upstream of a zone?

Re: collect cell values from a stack of rasters

Re: collect cell values from a stack of rasters

collect cell values from a stack of rasters

Re: Bearing from NA Solution

Re: extract a statistic from overlapping features ...

extract a statistic from overlapping features (poi...

Re: Creating Footpath Network in Buildings/Campus

Re: Iterate different stops for different routes

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