[mkgmap-dev] [Patch v1] change process-destination option

Mon Mar 28 13:49:24 BST 2016

Hi Greg,

Just to make sure: You have to use the special binary from the link

provided or you can use the patch to compile your own binary.

I've created the patch to solve your problem. So I am now

waiting for your results. When you say that it helps you and nobody

else claims that it causes too much trouble to change the style I'll

probably commit it.

Gerd

________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von greg crago <gregcrago at gmail.com>
Gesendet: Montag, 28. März 2016 14:37
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] [Patch v1] change process-destination option

i assumed this patch would have been in r3674. I will use r3673. Can you tell me when this will be incorporated in the main releases?

Greg

On Sun, Mar 27, 2016 at 2:37 PM, Gerd Petermann <GPetermann_muenchen at hotmail.com<mailto:GPetermann_muenchen at hotmail.com>> wrote:

Hi Greg,

you say that you use r3674, not the patched r3673.

Please use this binary:

http://files.mkgmap.org.uk/download/295/mkgmap.jar

Gerd

________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk<mailto:mkgmap-dev-bounces at lists.mkgmap.org.uk>> im Auftrag von greg crago <gregcrago at gmail.com<mailto:gregcrago at gmail.com>>
Gesendet: Sonntag, 27. März 2016 20:50

An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] [Patch v1] change process-destination option

I am not getting an empty string for a destination tag that does not exist.

I am using mkgmap r3674 and using the DEFAULT style with one line added at the top of the line file:

highway=* { echo 'BEFORE destination=${destination}'}

Upon execution, the command prompt window shows:
BEFORE destination=Beck Road

I expected the string would be empty, since no destiantion tag exists.

Attached is the osm.pbf file

The patch was suppose to:

1) the tag destination is not changed by mkgmap

Am I missing something?

Greg

On Wed, Mar 23, 2016 at 7:37 PM, Alexandre Loss <alexandre.loss at gmail.com<mailto:alexandre.loss at gmail.com>> wrote:
Hi Gerd,

Nothing regarding the limits of 10m.
I'm only saying that I keep mkgmap:exit_hint=true in my "lines" and it continues perform as expected.

[],

Alexandre

2016-03-23 14:51 GMT-03:00 Gerd Petermann <GPetermann_muenchen at hotmail.com<mailto:GPetermann_muenchen at hotmail.com>>:

Hi Alexandre,

Thanks for testing.

I see no problem with the code for process_exits, I think it only adds

tags with the mkgmap prefix. Do you mean the limits regarding 10m ?

Gerd

________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk<mailto:mkgmap-dev-bounces at lists.mkgmap.org.uk>> im Auftrag von Alexandre Loss <alexandre.loss at gmail.com<mailto:alexandre.loss at gmail.com>>
Gesendet: Mittwoch, 23. März 2016 17:32
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] [Patch v1] change process-destination option

Hi Gerd,

After update my local mkgmap with this patch, follow my tests' results (in a small fictitious map):

1) Without change my proprietary style "lines" file, I get the following error as expected:

GRAVE (StyledConverter): 03137600-lagoa_santa.osm: At least one 'lines' rule in the style contains the expression mkgmap:dest_hint=true, it should be changed to mkgmap:dest_hint=*

2) Changing mkgmap:dest_hint=true to *, as directed above, the map was compiled without error and the result works as expected.

Therefore, I think that the patch is working like charm.

I didn't change any exit_hint in lines file and the exits continue working as expected. Are you changing only dest_hint or are you gonna change dest_exit also?

Regards,

Alexandre

2016-03-23 6:07 GMT-03:00 Gerd Petermann <GPetermann_muenchen at hotmail.com<mailto:GPetermann_muenchen at hotmail.com>>:

Hi all,

please read carefully:

Up to now the process_destination option is a bit problematic because

it may add the tag destination=* to an existing OSM element, and I think this

is not good, all tags added by mkgmap should have the mkgmap: prefix.

As Greg pointed out this causes problems for style authors who want to

create special hints depending on tags like destination:street .

The attached patch changes the method like this:

1) the tag destination is not changed by mkgmap

2) Instead the special tag mkgmap:dest_hint is now set to the

destination string that was found in one of the tags listed in this code snippet:

        tags.add("destination");
        tags.add("destination:lanes");
        tags.add("destination:lanes:forward");
        tags.add("destination:lanes:backward");
        tags.add("destination:forward");
        tags.add("destination:backward");
        tags.add("destination:street");

(BTW: This is also the order of evaluation in mkgmap searches since r3673, of cause

forward/backward are checked depending on the direction of the way)

For style authors this means that they have to

1) change all rules with mkgmap:dest_hint=true to mkgmap:dest_hint=*

2) change the rule that produces the hint to something like this:
mkgmap:dest_hint=*
  { set dest_hint = '${destination:ref|subst: =>} ${mkgmap:dest_hint|subst:;=> |subst:/=> }' |
         '${ref|subst: =>} ${mkgmap:dest_hint|subst:;=> |subst:/=> }' |
         '${mkgmap:dest_hint|subst:;=> |subst:/=> }';
       }

Basically all places where "destination" was used were changed to mkgmap:dest_hint.

I am aware that this could cause trouble, so I've added a check that complains when

the style contains an expression mkgmap:dest_hint=true .

A binary can be found here:

http://files.mkgmap.org.uk/download/295/mkgmap.jar

With the default style this produces the same img file as r3673.

Please let me know if you see problems with your style.

Gerd

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