Color code a map

[sajarac]

Hi there,

Question here?

I would like to add a map in my powerapp, somebody could say just insert a PowerBI title and done. but I can't have the other users with a premium account to see PowerBI titles. So that is why I have decided to create my own map. 

Here is my idea:

I want to insert a base map, then make each state their own shape and put on top of the base map. Now apply the onselect property to each shape and get the filters etc.

My question is? How can I have each shape to have an specific color? I mean when you insert an icon you can easy change the icon color , but If I do the same with my png file the entire image gets the color.

thanks in advance for any response,

Regards,

[mdevaney]

@sajarac 

The map would need to be an SVG with individual 'state/provinces'.  Then you could specify the fill property of the item by putting the SVG code in an HTML Text control and changing the fill color of each shape.

---
Please click "Accept as Solution" if my post answered your question so that others may find it more quickly. If you found this post helpful consider giving it a "Thumbs Up."

[sajarac]

Thank you very much for your prompt response, just please correct me if I am wrong.

so this mean that I only need to create a single map SVG file with the states provinces delimited? So I don't need to create a small shapes of each state/province separated?

And also could you please send me a sample of the HTML code?

Sorry to bother you, and thanks in advance

[poweractivate]

@sajarac 

@sajarac  wrote:

Now apply the onselect property to each shape and get the filters etc.

---

If you use @mdevaney  approach it is a bit more advanced. You will not get tiny shapes with an OnSelect property to use.

Instead you have to do something like this in the HTML Text control as an example:

"data:image/svg+xml," & EncodeUrl(
    "<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'>
       <circle cx='100' cy='100' r='80' fill='" & _SomeSelectedValueFromSomeWhereElse & "' />
    </svg>"
)

However, now that you mention it @sajarac  if you were to go with this approach from @mdevaney , we are unsure how you would get functionality on the SVG element clicks on the shapes (states). While something like the above would allow you to do something like click some other thing like a dropdown somewhere else and then set a color selected on one of the shapes based on that, etc. with some specific coding of the dropdown and the SVG code, so you could do things like that.

However, we are not sure if clicks from the SVG elements themselves can cause "actions" in Power Apps with out of the box behavior. 

We are unsure how this would be possible, without the Power Apps Component Framework (which is much more advanced and considerable work compared to using a relatively much easier suggestion like @mdevaney's).

We also would be interested how a scenario like @sajarac's could be accomplished only using the SVG code placed  in HTML Text control Power Apps.

@sajarac if all you need to do is set the color and do nothing else, the suggestion from @mdevaney should work perfectly. If you also need to set color, but not by clicking the states, but rather clicking Power Apps elements to change the color of the SVG shapes, even that should be possible with the suggestion from @mdevaney  (with a bit more work).

However, @sajarac if your scenario involves actually clicking on the states themselves, we're not sure the clicking on the states would be covered under the suggestion from @mdevaney - if it still is possible even then we'd be curious how, maybe if @mdevaney does have a way in mind and wants to share it, we would also be interested in such a way .

The only thing we can think of and still avoid PowerApps Component Framework (but may not be perfect) is:

you could instead assemble a series of SVG images instead of just one SVG image - with each SVG image being each individual state - and have them as separate Image controls - with the Image property of each Image Control being defined using the similar kind of svg code as the above but just for each individual state image instead of the whole map. In this way they can each individually have the OnSelect property you want on the image, and the SVG code would be used to render the image of the state / province for the Image property. 

However there are some downsides to this:

1) The hovering and unhovering color change is probably not possible at all when doing it this way, even if you have separate Image if you use SVG, this might only be possible when making the custom code component instead.
Ref: 
SVG hover in PowerApps (powerusers.microsoft.com)

as you can see @RandyHayes tested pretty recently as of this writing and it is not possible to use hover in SVG out of the box. We also could not find out any way either when testing it ourselves just prior to this writing, (at least, when we were testing only simpler ways that do not require the Power Apps Code Component framework).

2) The click or select will trigger on the whole rectangle not on just, say, the parts where the path is defined. We are not sure if there might be a way to format the SVG where this does not happen - if there is, we are unsure what that may be right now.

3) In general those SVG Images done this way won't feel like the Power Apps Icons that come out of the box in terms of hovering, selecting, etc. It is possible that playing with the SVG code could make it closer to behaving as such, but we are not sure in exactly what was it has to be played with to accomplishing this, or if it is even possible to play with the SVG any further to achieve that and maybe only can be done with Power Apps Component Framework at that point. 

So @sajarac it would depend what your scenario is exactly - are you envisioning needing to click on the map tiles just like you can in Power BI? We did note that you specifically want to use Power Apps Canvas App only for this one, and not Power BI - this question is intended to mean as follows: do you want the similar effect and functionality where you can click on the individual state in Power BI, but in the Canvas App?

[mdevaney]

@sajarac 

To clarify, what I’m saying is you would either need and SVG version of the map of North America or all of the individual states/provinces. Then you could change the states/provinces colors by manipulating the SVG code.

I don’t have any sample code to share.  You will have to find or create these SVG files yourself.  Putting together this project would likely take a few days.

---
Please click "Accept as Solution" if my post answered your question so that others may find it more quickly. If you found this post helpful consider giving it a "Thumbs Up."

[sajarac]

Thank you very much both @poweractivate , @mdevaney  for your valuable help.

And a big thank you to you @poweractivate for tis huge explanation. It seems like a thesis for me.

I have enclosed both maps the USCAN.svg properly mapped and also a test state/province, in this case I have choosed "SK" in Canada.

I tried to add both maps to my app so the big map and the "SK" on top of that. But still not clear to me how to play whit this.

I think that when the user click in a specific state/province. that province could change the fill color and then set a parameter value, that parameter could trigger a table/gallery/dropdown to filter the data based on that state/province selected?

Make sense guys?

 P/S I will send you the SVG files in a PM, because I can't upload svg files.

[mdevaney]

@sajarac 

Unfortunately, those SVG files can't be edited in Notepad.  They are encoded in such a way that makes the text show as gibberish.  You'll need to find some different files.

[sajarac]

True, but I use this site to properly map each of the states/regions. So each one has their own label/tag

https://synoptic.design/

If you upload the map that I sent you you will see.

[mdevaney]

@sajarac 

Sorry, but I do not want to upload the map to the website.  The synoptic design website is outside of my area of expertise.

If there is an SVG which has editable colors I am willing to help here because I know how to do it.  This could turn out to be a fairly large project and I don't want to start doing something that will be a huge time investment.  Hopefully you understand my reasons.

[sajarac]

I totally understand, and again thanks for your help. The map is already mapped and each state/province has a tag/label according to their name i.e TX=TX

Thanks again