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Firstly I need to overlay a grid in JOSM. The grid should be 1,5 km^2 per square and should cover the data layer in JOSM.

Secondly I need to run the built in validator for each square on the grid, presenting me with the number of errors for each grid square.

Thirdly I need to export the information into Excel to process the data. Something like square 1 has 3 errors for 'unnamed ways', square 2 has 6 errors for 'unnamed ways', etc.

How can this be achieved?

asked 16 Sep '15, 21:38

BmanS's gravatar image

accept rate: 0%

edited 17 Sep '15, 05:53

aseerel4c26's gravatar image

aseerel4c26 ♦

You can make a simple grid by drawing ways on separate layer and set the ways to for example motor ways. Then set both the grid layer and your working layer to visible, and the grid is shown in the working layer as black lines.

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answered 11 Aug '21, 15:00

Msiipola's gravatar image

accept rate: 0%

This is definitely not achievable without some programming and some modifications to JOSM.

You will have to split the data into squares first, using e.g. osmconvert, osmosis, or osm-history-splitter, and you will have to write a small program that computes the grid and executes one of these programs to achieve the splitting.

After that, your choices are either to modify JOSM so that it can run the validator from the command line and output results as CSV or similar, or you could drop JOSM altogether and use the open-sourced check utilities KeepRight or Osmose which might be more amenable to such a modification than JOSM which is geared towards interactive editing.

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answered 16 Sep '15, 22:24

Frederik%20Ramm's gravatar image

Frederik Ramm ♦
accept rate: 23%

edited 16 Sep '15, 22:34

I expected some programming.

How do I do all that? Or where can I read up and learn how to do it?

I already modified the JOSM validator to search for specific things I am interested in which I could not do with the other validation tools. So I have the validator tool already set up. However now I need to split the data into grids and have the validator validate one grid at a time. How can I split the data with osmconvert, osmosis or osm-history-splitter and then write that program?

(17 Sep '15, 08:13) BmanS

An easy way to programatically download squares is to use the remote control.

That doesn't help you with the validatetion process, but if you've started modifying the validator code already you could try to register a remotecontrol handler for the validator that returns the errors in a parseable format. That actually sounds like a useful feature, consider upstreaming it if you implement it.

(17 Sep '15, 10:10) Vincent de P... ♦

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question asked: 16 Sep '15, 21:38

question was seen: 4,546 times

last updated: 11 Aug '21, 15:00

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum