[josm-dev] Can I style by user in mappaint?

[Ulf Lamping]

Am 16.01.2010 05:38, schrieb Ævar Arnfjörð Bjarmason:
>>
>> Avar was the first one I've seen to come up with "show me stuff from
>> user xy in a special way". I'm unsure if this is really a common use case.
>
> FWIW potlatch does this every day by rendering things differently if
> user == the guy who uploaded tiger&&  tiger:reviewed == ....

tiger has special tags that are easy to display, JOSM renders:

<condition k="tiger:reviewed" v="no"/>

already for quite a while in a special way.

I can't see why a special "user condition" is needed here.

>> Personally, I'd like to keep things simple here - so even none
>> developers have at least a chance to write their own rendering rules.
>>
>> Otherwise complexity grows and grows and ends up like the mapnik
>> rendering rules with embedded SQL statements - the learning curve is now
>> really high :-(
>
> Sure, but<condition user="foo" />  isn't that much harder than
> <condition k="" v=""/>  :)

Exercise: Can you tell - not looking at the help - what's the difference 
between the two search expressions:

type=*

foot:

... I'm pretty sure very few people can.


The JOSM search box help lists 21 conditions, offers case 
(in)sensitiveness and optional regular expressions, still misses a 
simple logical AND and offers a myriad of possible combinations.


In contrast, we currently have four different conditions that are easy 
to grasp:

<condition k="key" v="value"/>
<condition k="key" b="yes"/>
<condition k="key" b="no"/>
<condition k="key"/>


I do see a clear difference between how hard it is to learn one of the 
two approaches.

Regards, ULFL