[mkgmap-dev] Meaning of option --x-mdr7-excl

Wed Apr 5 07:34:03 BST 2017

El 04/04/17 a las 17:13, Gerd Petermann escribió:
> Hi all,
>
> I did not yet document this option because I don't think that it is useful as it is implemented now.
> I think it works fine for english speeking countries with road names like "Abc Street" and "Xyz Road".
> Using --x-mdr7-excl=Road,Street in combination with --x-split-name-index  will work fine.
>
> A different picture is a frensh country.
> Let's look at an example. Assume you have options --index and --x-split-name-index
> The road name "Chemin de Pierre Froide" is added to the index as
> "Chemin de Pierre Froide"
> and because of --x-split-name-index the following extries are also added:
> "de Pierre Froide"
> "Pierre Froide"
> "Froide"
> Now, would you expect a change  if you use option --x-mdr7-excl=Chemin,Rue,Aveue ?
> And what would you expect with  --x-mdr7-excl=de,du,la ?
>
> With the current implementation there would be no change in output, because the
> the check works in this way:
> Build the string that should be added to the index
> Check if that string is in the exclude list, if not, add it to the index.
>
> I might change that like this:
> Build the string that should be added to the index
> Check if the first word in that string is in the exclude list, if not, add it to the index.
>
> With this change the option --x-mdr7-excl=Chemin,Rue,Aveue
> would exclude the entry
> "Chemin de Pierre Froide"
Would "Chemin de Pierre Froide" still be added by --index option?
> and --x-mdr7-excl=de,du,la would exclude
> "de Pierre Froide"
>
> Another option would be to allow regular expressions in the exclude list, but that would require more
> effort (input file instead of single option) and probably much more run time.
I think creating an input file for this wouldn't be a problem. I 
currently use one with over 1000 lines to manage road names for 
different "French style" languages.
>
> I'd prefer to have a logic which first analyses all strings added by the --x-split-name-index option so that
> only those are generated which do not appear more than x %  .
>
> Comments?
>
> Gerd