Add preference for what coordinates displayed

Discussion of things we want in Geocart
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nvkelso
Posts: 19
Joined: Fri Jun 04, 2010 12:16 am

Add preference for what coordinates displayed

Post by nvkelso »

1. Choose between default DD MM SS and DD.DDDDDDD formats. With option to use fancy quote marks or not on the DD MM SS.

2. In the info panel, now it shows always the local map coordinates and the lngLat coordinates. These should be modifiable. If I have a polyconic map, sometimes I want to just know what the equivalent web mercator coordinates would be for that spot. I should be able to find this out without reprojecting my raster. Maybe offer option of 3rd display of coords here that is user defined?
daan
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Joined: Sat Mar 28, 2009 11:17 pm

Re: Add preference for what coordinates displayed

Post by daan »

1. “Fancy quote marks” = tick marks? You need to be able to turn off display of proper tick marks in preference to straight single quote and straight double quote? Presumably you need this for pasting into other applications that don’t recognize tick marks?

You would want DD.DDDDDDD display throughout the UI if it were set in a preference dialog? I wonder if there is some more refined way to deal with this than a preference setting, something that lets you view any particular instance in whatever format you want (often, radians for me!) but without having to clutter up dialog boxes with extra controls.
« ponders »

2. I don’t quite follow this one. You want to hover the mouse pointer over a pixel of a map in Projection X but see displayed in a status palette the [x,y] coordinates of the corresponding geographic location on Projection Y?
nvkelso
Posts: 19
Joined: Fri Jun 04, 2010 12:16 am

Re: Add preference for what coordinates displayed

Post by nvkelso »

1a. Yes, by straight single and double quotes we are talking about ' and " not typographer quotes or ticks. This (and DD.DDDDDD) is for interapplication bliss.

1b. Yes, it would be nice to have local over rides in dialogs and such. But I still think this should be an application-level default. For you it would be radians, but for me it would be DD.DDDDDD, but sometimes when I am dealing with a DD MM SS source, I would reset it locally. ArcMap has a flyout in it's info panel for setting the units (this is similar to Illustrator and Photoshop has flyout menus in their panels).

2. Yes, I would like the option to see my [x,y] coordinates displayed in a 3rd projection [x2, y2]. This is helpful when georeferencing but knowing it will end up in a different target projection. That [lat, long] is helpful for setting control points and such. But so is the [x2, y2].
daan
Site Admin
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Joined: Sat Mar 28, 2009 11:17 pm

Re: Add preference for what coordinates displayed

Post by daan »

2. I think I see the utility, but the details elude me. How will you tell Geocart what the [x, y] origin is in the target projection? And what units would be on those [x, y] coordinates? Pixels? False northing/easting (what does this even mean for most projections)? Raw projection space units independent of datum? It almost seems like it would be easier to make a map in the target projection (sans raster databases so that it draws quickly) and go find the lat/long on it, since you’d end up specifying everything about the target projection anyway.
nvkelso
Posts: 19
Joined: Fri Jun 04, 2010 12:16 am

Re: Add preference for what coordinates displayed

Post by nvkelso »

2. I would set this "reference" projection by selecting a map in the document and using a menu item to offer it to the app's preferences. It could have the added benefit of being the default projection used in the app.

I agree this is low priority.
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