[mkgmap-dev] --make-opposite-cycleways option

Sat Mar 7 09:02:47 GMT 2015

Hi Mike,

I think a possible problem with your patch is that you always add the cycle way
with type 0x10, without further checking the attributes of the highway.

The -make-opposite-cycleways option would add the cycle way with the same type
as that for the car.

Gerd

From: mike at tvage.co.uk
To: mkgmap-dev at lists.mkgmap.org.uk
Date: Fri, 6 Mar 2015 00:11:00 +0000
Subject: Re: [mkgmap-dev] --make-opposite-cycleways option

Hi Gerd, I added the following to the lines file in my style and it works fine there if I remove the --make-opposite-cycleways option, allowing just cycling and walking against the flow. However, it doesn’t seem to work correctly if I add it to the default style (it allows cars to go the wrong way along the one-way street). highway=* & (oneway=yes | oneway=-1 | oneway=true | oneway=1 | oneway=reverse) & (oneway:bicycle=no | cycleway=opposite | cycleway=opposite_lane | cycleway=opposite_track) {delete oneway; delete cycleway; set access=no; delete foot; delete vehicle; delete motor_vehicle; delete motorcar; delete goods; delete hgv; delete psv; delete emergency; delete taxi; delete bus; add bicycle=yes; set highway=cycleway} [0x10 road_class=0 road_speed=1 resolution 24 continue] I can’t see why this might be happening. Has anyone any ideas (the attached patch is what I changed)? Regards,Mike From: Gerd Petermann [mailto:gpetermann_muenchen at hotmail.com] 
Sent: 04 March 2015 16:22
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] --make-opposite-cycleways option Hi Mike,

the style cannot create a way, but it can add multiple routable ways for one OSM way.
Use "continue" or "continue with actions" for that.

The comment is a bit misleading and I think the code for "old-style" is now obsolete as well.

GerdFrom: mike at tvage.co.uk
To: mkgmap-dev at lists.mkgmap.org.uk
Date: Wed, 4 Mar 2015 16:01:56 +0000
Subject: Re: [mkgmap-dev] --make-opposite-cycleways optionHi Gerd, I was not clear what you meant by change the style to produce the same result, so I provided a change to the style that with the code changes produces the same result as now. Unless a style can create an extra way, I can’t see how a style can be set up to allow cycling in both directions, but other traffic only in one direction without using the extra way created by the --make-opposite-cycleways code. Can a style create a way? I got the list of tags to delete from the following code which suggested that the following lines were all access tags (plus a few tags mentioned elsewhere that I also included):                 public boolean init(ElementSaver saver, EnhancedProperties props) {                                                                if (props.getProperty("old-style", false)) {                                                // the access tags need to be loaded if the old style handling                                                // is active and access restrictions are handled by the java                                                // source code and not by the style                                                usedTags.add("access");                                                usedTags.add("bicycle");                                                usedTags.add("carpool");                                                usedTags.add("delivery");                                                usedTags.add("emergency");                                                usedTags.add("foot");                                                usedTags.add("goods");                                                usedTags.add("hgv");                                                usedTags.add("motorcar");                                                usedTags.add("motorcycle");                                                usedTags.add("psv");                                                usedTags.add("route");                                                usedTags.add("taxi");                                } I gather that route is not an access tag, so I agree that it should not be included. Regards,Mike From: Gerd Petermann [mailto:gpetermann_muenchen at hotmail.com] 
Sent: 04 March 2015 05:31
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] --make-opposite-cycleways option Hi Mike,

as I said, I'd be more happy to have a patch that remove's the option
and shows how to change the default style instead to get the same result 
as with your patch.

Your patch tries to remove all kinds of tags which might lead to wrong
routing:
+        cycleWay.deleteTag("vehicle");
+        cycleWay.deleteTag("motor_vehicle");
+        cycleWay.deleteTag("carpool");
+        cycleWay.deleteTag("delivery");
+        cycleWay.deleteTag("emergency");
+        cycleWay.deleteTag("foot");
+        cycleWay.deleteTag("goods");
+        cycleWay.deleteTag("hgv");
+        cycleWay.deleteTag("motorcar");
+        cycleWay.deleteTag("motorcycle");
+        cycleWay.deleteTag("psv");
+        cycleWay.deleteTag("route");
+        cycleWay.deleteTag("taxi");
+        cycleWay.deleteTag("bus");
+        cycleWay.deleteTag("truck"); 

Please explain why you remove route=* .
I think that one should be kept.

GerdFrom: mike at tvage.co.uk
To: mkgmap-dev at lists.mkgmap.org.uk
Date: Tue, 3 Mar 2015 19:45:00 +0000
Subject: Re: [mkgmap-dev] --make-opposite-cycleways optionHI Gerd, the attached updated patch adds a line to the default style that can be uncommented if you want to see the opposite cycleway names as they are currently. Regards,Mike From: Gerd Petermann [mailto:gpetermann_muenchen at hotmail.com] 
Sent: 03 March 2015 08:26
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] --make-opposite-cycleways option Hi Mike,

I think you are right  regarding the access tags.
The current solution in combination with the default style
might route a truck through the wrong direction of a oneway.
Thanks for pointing this out.

If I got it right, most style developers don't use this option,
they prefer to have the logic in the rules.
Maybe this is another argument to remove the option
instead of adding code to make it work in special cases?

Is anybody able to change the default style so that it produces
the same result ?

GerdFrom: mike at tvage.co.uk
To: mkgmap-dev at lists.mkgmap.org.uk
Date: Mon, 2 Mar 2015 22:46:07 +0000
Subject: [mkgmap-dev] --make-opposite-cycleways optionDear all,

When using the --make-opposite-cycleways option, I notice that the address
index adds a road name of the actual road name suffixed with " (cycleway)".
For me at least, this is undesirable. Also the generated name does not
conform to the OSM naming convention of not including any descriptive
information in names. I therefore propose that the name of an opposite
cycleway be set to the same as the original road name, and that users who
want to name the opposite cycleway differently should use the style file to
rename it.

In looking at the code that produces the opposite cycleway, I also believe
there is an error in the way it handles access tags - the code currently
sets access=no, bicycle=yes and foot=no, but ignores all other access tags.
Hence if (for example) the road has psv=yes on it, the generated cycleway
will also have psv=yes (unless I am misunderstanding something in the
handling of access tags). 

I therefore submit the attached patch for trial.

Regards,
Mike
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