topic Re: Add Transparency Slider to a Layer in ArcGIS Viewer for Flex Questions

Add Transparency Slider to a Layer

NeilMillward — Thu, 28 Oct 2010 16:56:04 GMT

I am trying to add a Transparency Slider to a layer in my layer list but I cannot find any information on how to do this in the concepts. Is this something that is easy to do?

Thanks

Re: Add Transparency Slider to a Layer

BjornSvensson — Tue, 02 Nov 2010 00:32:05 GMT

It's not easy ... as you probably figured out based on the lack of responses 🙂

It is however something we are thinking about adding to a future release of the Flex Viewer. So I just wanted to throw out some related questions:

Would it be best (or at least good enough) if users could set the transparency on all operational layers (as opposed to them only being able to change the transparency on some of the operational layers)?

Should this functionality (layer transparency for end-users) be the default?

Should it always be there, or is something you would want to be able to turn off (not allowing your end users to change the transparency)?

Re: Add Transparency Slider to a Layer

NeilMillward — Tue, 02 Nov 2010 14:51:31 GMT

Hello Bjorn,

Thank you for responding. In answer to your questions, I think that it would be a good idea to have a transparency slider as the default on all operational layers but give the end user the ability to turn it off if they wanted to.

Another thing that seems pretty basic to me that I don't seem to able to do is hyperlink to a document (in my case a pdf) from the infopopup window.

Is this possible to do? If not could you consider also adding this function to a future release.

I would like to thank ESRI for putting together the ArcGIS Viewer for Flex and supporting it. It is a great benefit to the GIS Professionals who are not programmers but are under increased pressure to get our data out to the public at minimal cost but with a professional looking product.

Thanks

Neil Millward

Re: Add Transparency Slider to a Layer

ChrisBruce — Tue, 02 Nov 2010 17:27:09 GMT

I'm looking for this functionality in the version 2.1 viewer as well but I'm confused by the statement that this is something that may be added in a future version. It was already there in a previous version (like 1.4) but seems to have gone away now.

Re: Add Transparency Slider to a Layer

ErwanCaradec — Sun, 21 Nov 2010 21:11:11 GMT

Hello,
i was looking for this functionnality too, i made a draft modification based on the standard LayerList Widget for exploring the possibilities.

I think an alpha slider and a "zoom to layer" button would be interesting on top layers if they are checked as visible.

code

Erwan

Re: Add Transparency Slider to a Layer

RichardDiaz — Tue, 23 Nov 2010 12:55:14 GMT

... I think an alpha slider and a "zoom to layer" button would be interesting on top layers if they are checked as visible.

code

Erwan

Erwan,

Could you please repost your code zip file. It is coming through corrupt on download.

Regards...Rick

Re: Add Transparency Slider to a Layer

DasaPaddock — Tue, 23 Nov 2010 15:45:29 GMT

Can you try downloading it with a browser besides IE if that's what you tried?

Re: Add Transparency Slider to a Layer

RichardDiaz — Tue, 23 Nov 2010 17:34:12 GMT

Can you try downloading it with a browser besides IE if that's what you tried?

Thank you Dasa! It was an Internet Exploder issue. Firefox worked.

Best regards...Rick

Re: Add Transparency Slider to a Layer

ErwanCaradec — Tue, 23 Nov 2010 21:00:34 GMT

Caution Rick,
use it only for test, it is not well coded.

Erwan

Re: Add Transparency Slider to a Layer

KevinThomas — Wed, 24 Nov 2010 13:34:37 GMT

Erwan,

That is great!

Bjorn,
Like others, I would like to see this out-of-the-box at the layer level with the option to disable.

thanks!
Kevin

Re: Add Transparency Slider to a Layer

RobertScheitlin__GISP — Wed, 24 Nov 2010 14:47:42 GMT

All,

Have you seen the transparency slider on my site? You have to click the transparency icon on the map service in the TOC and then the slider replaces the layers name and has a close button to restore the name.

http://gis.calhouncounty.org/flexviewer2.0/

Re: Add Transparency Slider to a Layer

RichardDiaz — Mon, 29 Nov 2010 11:53:39 GMT

Caution Rick,
use it only for test, it is not well coded.

Erwan

Thanks for the warning Erwan. I was interested to see how your widget interacted with the existing TOC.

Best regards...Rick

Re: Add Transparency Slider to a Layer

RichardDiaz — Mon, 29 Nov 2010 11:57:51 GMT

All,

Have you seen the transparency slider on my site? You have to click the transparency icon on the map service in the TOC and then the slider replaces the layers name and has a close button to restore the name.

http://gis.calhouncounty.org/flexviewer2.0/

Yes Robert, it works well and is a nice addition! Have you considered adding "Zoom to Layer" functionality to the TOC?

Best Regards...Rick

Re: Add Transparency Slider to a Layer

RobertScheitlin__GISP — Mon, 29 Nov 2010 12:43:47 GMT

Rick,

Yep I do that through a right click context menu. I would wait and see what the Viewer Team pulls together for the FlexViewer 2.2. Bjorn has ask some questions about what people are looking for...

Re: Add Transparency Slider to a Layer

RyanGillen — Mon, 29 Nov 2010 14:52:45 GMT

Robert,

Have you made this widget available yet?

Re: Add Transparency Slider to a Layer

RobertScheitlin__GISP — Wed, 01 Dec 2010 15:32:23 GMT

Ryan,

Finally found time to put this out there...

http://www.arcgis.com/home/item.html?id=e2cb71d5c04d40d19e9f945ae0db7ce8

Re: Add Transparency Slider to a Layer

PaulHeinrich — Tue, 07 Dec 2010 15:21:30 GMT

I'd just like to add my two cents. Having a transparency slider for each layer would be very useful. One slider for all operational layers is a lot less useful. The ability to turn off the slider for some layers would be nice, but not critical.

cheers, Paul

Re: Add Transparency Slider to a Layer

IvanBaehr — Sun, 06 Feb 2011 17:59:17 GMT

Ryan,

Finally found time to put this out there...

http://www.arcgis.com/home/item.html?id=e2cb71d5c04d40d19e9f945ae0db7ce8

Thanks for this great widget! This was just what I have been looking for. The slider option to gadually shift between pre-event and pos-event image for disaster analysis is very useful for disaster analysis. It would be useful if the slider could be set passive (hiding) for separate layers.

Looking foreward to more cool widgets 🙂

Ivan Baehr
GIS specialist
UNOSAT

Re: Add Transparency Slider to a Layer

RobertScheitlin__GISP — Sun, 06 Feb 2011 19:04:21 GMT

Ivan,

I am a little unclear on this

It would be useful if the slider could be set passive (hiding) for separate layers.

What exactly do you mean?

Re: Add Transparency Slider to a Layer

PedroGarcia — Mon, 07 Feb 2011 06:10:08 GMT

It's not easy ... as you probably figured out based on the lack of responses 🙂

It is however something we are thinking about adding to a future release of the Flex Viewer. So I just wanted to throw out some related questions:

Would it be best (or at least good enough) if users could set the transparency on all operational layers (as opposed to them only being able to change the transparency on some of the operational layers)?

Should this functionality (layer transparency for end-users) be the default?

Should it always be there, or is something you would want to be able to turn off (not allowing your end users to change the transparency)?

Hi Bjorn,

Why not add for nearest release the same funcionality provided in ArcMap by the Swipe layer button in Effects extension? (for me it's more useful when comparing two aerial photos) 🙂

Regards,
Pedro.