[uMap] questions, different behaviour for selected marker, filter through data list, newlines in popup table side window, iframe authentication

[Jelle de Jong]

Hello everybody,

I created a beautiful map on https://umap.openstreetmap.fr/ and I got a 
few questions.

1. I got clickable markets turned on and when I use browse data I get a 
list of all the markers, but when I select one from the list, the zoom 
of the map changes, but can I make the selected marker change colour or 
do something different then the other markers because I can not 
distinguish what I have selected from all the other markers. How do I 
make selected markers look different from the rest of them?

2. When browsing the data, there is a filter input box. I got a list of 
places in my list but when I type in something that I see listed in my 
data everything just disappears, I can not filter on my data (I got my 
list organised by postalcodes+housenumber) How can I use the filter to 
filter through my data list?

3. I have configured a popup content template to show as table in the 
side panel. This is great! I use a geojson as input file and I want to 
display text with newlines. My geojson contains /n as newlines 
indicators but uMap does not make a newline out of them, it also does 
not show them as text either which is good. How do I show newlines from 
a geojson input?

4. How can I use an iframe to a map with authentication, I got 
configured that only editors can view the map, but now my external 
iframe to the map stays blank. Is there a secure way to pass 
authentication within an iframe to show a map? 
src="//username:password at umap.openstreetmap.fr/en/map/<snip> did not 
work, and it is probably not secure. Is there a way to provide a popup 
for a user name and password? (openstreetmap user account auth).

Thank you all for the great uMap tool and support.

Kind regards,

Jelle de Jong