Latest Contributions by RogierBusscher

‎09-09-2018

This is in fact the solution. When I turned the XY-extent (shapefile properties > Feature extent) settings to that of the blue rectangle the polygon turned out as I wanted to. Thanks a lot!

‎09-09-2018

Hello, I am trying to fill a rectangle with some points and create thiessen polygons based on these points. I tried using the 'create thiessen polygon (analysis)' tool, and it works fairly well, just not precisely what I want. The result that is generated is the pink area below, with the minumum x and y and maximum x coordinates working as the boundaries. (Somehow this doesn't happen with the maximum y). However, I would like to fill the entire blue space. Does anyone have a suggestion how this can be done? Thanks a lot.

‎05-18-2017

Okay, clear. But somehow, my DestinationID fields do not match the ObjectID fields of my destinations. I am 100 percent certain that I have the data that the analyses were performed on. Could there be a specific reason why the values have no matches at all?

‎05-18-2017

So i guess i can make the closest facility solver behave like the OD-cost matrix solver by setting the amount of facilities to find to the actual number of destinations? This way i would have the same data as with the OD-solver, but with the actual routes included. Thanks a lot.

‎05-18-2017

Hi everyone, Sort of a similar question as my previous one, but there is a difference between them, so i decided to ask them separately. I have solved an OD-matrix for a multimodal network. (walking and metro) However, I would like to know at which metro station each 'commuter' got of to proceed his trip further by walking. Would it be possible to obtain this information in an easy way? Thank you in advance, Regards, Rogier

‎05-18-2017

Hi everyone, I am working on a way to calculate accessibility of certain districts within a city. My accessibility measure consists of the amount of jobs in the other districts+ a distance decay function. Now i would like to solve an OD-matrix with certain origins and destinations. However, i would like the outcomes to show for example the district_ID (which is one of the columns in the attribute table of the point feature class where the origins are loaded from) of the origin and the amount of jobs at each destination (also in the attribute table) . I did solve several OD-matrices already, but they do not show any information except for the impedance. I would like to know a way to include these characteristics of origins and destinations to the output OD-matrix Thank you in advance, Regards, Rogier

‎05-18-2017

Hi Asaf, Thanks a lot! Regards, Roger

‎05-17-2017

Hi everyone, I have a bike network with two kinds of streets. The first are just regular streets, where a biker has a speed of 6km/h. The second type are dedicated bike lanes where a biker has a speed of 10km/h. Now i would like to solve a closest facility problem with the network analyst. I would like to solve for closest distance, but I also would like to know the travel time that belongs to this closest distance. Is there an easy way to do this? Thank you in advance

‎05-12-2017

Melinda does indeed summarize my problem the best way. You assume that biking is always faster than walking, but the problem with this analysis is that not every metro or BRT station has a bike-parking facility. This means that for some origins it is faster to walk to the nearest BRT/Metro station, instead of biking, because this station does not have a bike parking facility. I think i am going to go with the solution that you both more or less proposed, by splitting up the analysis in parts and then adding the costs OD matrices to each other. I would like to thank you both a lot for your help. You really showed me new insights on network modeling.

‎05-11-2017

O.K. clear. I however do not think that your suggested solution will work, because in the end, I want to use this dataset to make an OD-matrix with multiple origins and destinations. Also, the 'commuters' will have to be able to use up to four different modes when moving from O to D. Plus, i want to model a way in which it is not possible to use a bike after the BRT or metro modes have been used. However, it should be possible to use the bike before this is done. I realize I have a very complex set of questions, but a powerful tool as the network analyst should be able to give the answers to this. Again, i really appreciate your help and I hope we can find a sollution to my problem together.

‎05-11-2017

My false stations are not restricted. At least i don't think so, in the added screenshot there is also nothing indicating a restriction. I chose to duplicate it because i got the data from somebody else this way. I also have to say that where the different line features overlap at lets say 90 percent, there's also infrastructure that's bike-only or pedestrian-only. Also, i am not very familiar with programming in Python, so i decided that if i could work around it, i should. But let's say i would merge the two layers. How would i make sure that after the commuter has been on the metro, the network analyst will take into account only the pedestrian time of the infrastructure? And that it will not use the bike-only infra? d

‎05-11-2017

My impedance is calculated with a 'minutes' field. I do in fact have a one-way restriction on the blue line, because i do not want people to get from the metro network to the bicycle network, because you cannot take your bike in the metro. However, underneath the blue(bike) line, is a red (walk) line to which no one-way restriction is applied. Also, there is a double 'false station' one for the bikes and one for the pedestrians. So obviously, when getting from the metro network it is impossible to get on the bike transfer line, but the solver should be able to make the route go trough the pedestrian transfer, right?

‎05-11-2017

In the original data there's no end point at the intersection with the blue line. However, in the edges, it is divided at the point of intersection. Furthermore, when i invert the stops 1 and two, traveling is in fact possible (See screenshot) So does the fact that there is no end point in the original data affect this? Furthermore, i would like to thank you a lot for your help. .

‎05-11-2017

Thank you for your answer. I remodeled the dataset, and got rid of the double infrastructure and applied your solution to take into account the difference between boarding and leaving the metro. Therefore, i also deleted the oneway restrictions. However, a similar problem keeps occurring. Now, i am not able to go from the transfer line to the 'real' infrastructure. I still do not have any idea what causes this. It is possible to travel along the transfer line (first screenshot). However, when the 'false metro station' is reached, it is not possible to travel further and i get an error (second screenshot). However, i am pretty sure that the infrastructure is connected, as shown in the third screenshot and my connectivity should also be correct (fourth screenshot). I hope you or somebody else can help me.

‎05-11-2017

I've created a multi-modal network data set with four main modes being Metro, BRT, Walking and Cycling. I want to have travel time as and impedance with multiple modes. However, to get onto the metro takes more time than getting of the metro. That is why i made two transfer lines between the metro and the walk infrastructure. They are in digitized in opposite direction and both have a oneway restriction. However, when solving a route from the metro infrastructure to somewhere else, it is impossible to get of the metro system. The analyst simply says there are no routes possible. I have the feeling that i defined my oneway restrictions in the right way. However, when i removed the restriction from the network dataset attributes, it was possible to get of the metro infrastructure. I added a picture in which the situation is explained. The metro transfer line has an arrow at the end to see in which direction it is digitized. I hope one of you can help me out.

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Date Last Visited	‎11-11-2020 02:24 AM

My Ideas

Latest Contributions by RogierBusscher

Re: extended Thiessen polygon

extended Thiessen polygon

Re: Show certain features in OD-matrix

Re: Show points on route OD-matrix

Show points on route OD-matrix

Show certain features in OD-matrix

Re: Solve OD-matrix for distance, but add travel time to outputs

Solve OD-matrix for distance, but add travel time to outputs

Re: Unclear what is wrong with Oneway restriction

Re: Unclear what is wrong with Oneway restriction

Re: Unclear what is wrong with Oneway restriction

Re: Unclear what is wrong with Oneway restriction

Re: Unclear what is wrong with Oneway restriction

Re: Unclear what is wrong with Oneway restriction

Unclear what is wrong with Oneway restriction