topic Re: Reference Scale in Java Maps SDK Questions

Reference Scale

JohnWass — Mon, 26 Aug 2013 02:01:19 GMT

I cannot seem to find a way to set a reference scale. Is it not there, or am I just a poor searcher?

thanks

Re: Reference Scale

MarkBaird — Tue, 27 Aug 2013 15:23:03 GMT

You are not a poor searcher, as there isn't a method for setting a reference scale (assuming you are talking about the reference scale option that exists in ArcMap).

Tell us a little more about what you are trying to achieve.

Mark

Re: Reference Scale

JohnWass — Tue, 27 Aug 2013 16:56:46 GMT

Hi Mark, That is exactly the function I am talking about. In other words, I want to set a scale level (ie 50,000) that a map is designed to be viewed at. If the scale of the map is adjusted up/down, the symbology/text on the map adjusts by getting larger/smaller.

An example of this use would be on the very cool Taxi demo. I would like to set a reference scale on the taxi graphic layer so that when I zoom out the taxis become smaller. It is useful if there are lots of taxis and you zoom out to see them as separate entities and not just a 'glob' of taxis.

For context; I am converting an existing Engine based ArcObjects application to Runtime and we have many existing map products that have a reference scale set. In the existing implementation I pass the scale from our 'map' concept down into the map ArcObject instance and we also utilize a boolen for each of our layers allowing the scale to be ignored or not. This allows our users to specify whether each layer scales symbols to the specified scale or not.

Thanks
john

Re: Reference Scale

MarkBaird — Wed, 28 Aug 2013 17:04:12 GMT

Hi John,

At the moment there isn't a way to do this out of the box.

If you are working with a small number of graphics, you might get away with listening in to a map zoom in/out and change the sybols of each of your graphics. However this isn't going to scale very well once you get more graphics, so understand the limitations with this (nasty) idea.

We've had a chat about this and I don't think it would be a hard feature to add, so I'll make sure we consider this for a future release. I always like to get feedback on useful additions we can add to the API.

Thanks

Mark

Re: Reference Scale

JohnWass — Wed, 28 Aug 2013 17:31:06 GMT

Sounds good, I have considered a similar workaround. Something like that should work for now and Ill look forward to a future release.

Thanks

Re: Reference Scale

JohnWass — Thu, 29 Jan 2015 17:41:56 GMT

Hi Mark, Just wanted to follow up on this. Has it made it on the feature list for any upcoming version?