topic Re: MGRS Coordinate Panel for Flex Viewer 3.1 in ArcGIS Viewer for Flex Questions

MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Mon, 28 Jan 2013 09:18:28 GMT

All,

I have just uploaded a widget to the gallery that displays a coordinate panel along the bottom of the application that shows Map Coordinates, MGRS and Scale. It allows provides check boxes to turn on/off both MGRS and Graticule Grids. Also includes a Zoom to MGRS Function.

Give your map tag an attribute of bottom="25" to ensure that the panel does not obscure any of the map face.

http://www.arcgis.com/home/item.html?id=595088b5b5f94bd39d152f9176e33d6d

Regards

Anthony

Re: MGRS Coordinate Panel for Flex Viewer 3.1

KennethLyons — Wed, 30 Jan 2013 18:56:46 GMT

Anthony,
This widget is great! One question though. Is there a way to display Lat/Long. I see in the .mxml that its defaulted to show what ever coordinate system the base map is, but I would find Lat/Long would be more useful to the people that access my viewer. I've tried to tell it to show "mapLat" and "mapLon" but based on the error I get, those don't appear to be defined in the code anywhere.

Thanks

Re: MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Sun, 12 Dec 2021 16:10:05 GMT

Kenneth,

I take it your application is in web mercator. The coordinates displayed are the stage x and y from the position of the mouse what you need to do is convert this from web mercator to lat long. If you have access to the source code try changing the following in the map_mouseMoveHandler function:

if (wkid === 102100 || wkid === 102113 || wkid === 3857)
{
var pt:Point = new Point(mapPoint.x, mapPoint.y);
m_geogToProg.projectInverse(pt);
mgrs = MoreUtils.getMGRSString(pt.y, pt.x);
Mercator.WebMercator.toGeographic(pt);
coords.text = "MGRS: " + mgrs + "   Scale: 1:" + map.scale + "\n" + "Lat: " + pt.y.toString() + "  Long: " + pt.x.toString();}

Regards

Anthony

Re: MGRS Coordinate Panel for Flex Viewer 3.1

KennethLyons — Thu, 31 Jan 2013 15:51:24 GMT

Anthony,
That definitly changed which coordinate system is displayed, but I think there is an issue with the conversion from mercator to lat/long. See attached screen shot.

Thanks for helping out!

Re: MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Thu, 31 Jan 2013 15:56:19 GMT

Kenneth,

Try commenting out the line:

m_geogToProg.projectInverse(pt);

And see what you get

Regards

Anthony

Re: MGRS Coordinate Panel for Flex Viewer 3.1

KennethLyons — Thu, 31 Jan 2013 16:06:07 GMT

That did it!
Thanks for the quick response.

Re: MGRS Coordinate Panel for Flex Viewer 3.1

MarcGraham — Tue, 12 Feb 2013 17:05:39 GMT

Hi Anthony,

Great to see your widget is updated. It works for me, only I cannot seem to get the MGRS Grid to display. The lat/long grid works, but nothing happens when I click the MGRS grid box.

Cheers,

Marc

EDIT: Please disregard it is showing up now. It didn't seem to want to show up when I had a dynamic basemap, but once I switched to a tiled map service it is showing up good as gold. Looks great! Thanks.

Re: MGRS Coordinate Panel for Flex Viewer 3.1

MarcGraham — Wed, 13 Feb 2013 01:35:51 GMT

I have one other problem, I can't seem to get it to show geo or dms coordinates, no matter what option I choose in the config.xml it will only show web mercator.

Can you tell me if there is anything I can do to fix this?

Regards,

Marc

Re: MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Wed, 13 Feb 2013 15:13:17 GMT

Marc,

Yes, sorry this is an old tag that has been left in from when I amended the original coordinate widget, it will have no effect on the widget now.

If you want to display geo instead of web Mercator and you have the ability to amend the source code follow the steps above

Sorry for the error

Regards

Anthony

Re: MGRS Coordinate Panel for Flex Viewer 3.1

DanielBerry — Fri, 26 Jul 2013 08:10:21 GMT

Anthony,

When using the "Go to MGRS:" function, where would I add a flash icon that shows where the exact location is at, similair to the CoordinateCopyWidget - helper.showGraphicAsCopied(this.mapPoint)?

Respectfully,
Dan

Re: MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Fri, 26 Jul 2013 13:01:41 GMT

Daniel,

It already shows where the grid is by the form of a rectangle. If you only type in a 6 figure grid the rectangle will be 1km square, if you type in a 10 figure grid it will be 1m square,

Regards

Anthony

Re: MGRS Coordinate Panel for Flex Viewer 3.1

AnthonyGiles — Tue, 06 Aug 2013 08:28:13 GMT

All,

I have just updated the MGRS coordinate panel widget to 3.4

http://www.arcgis.com/home/item.html?id=595088b5b5f94bd39d152f9176e33d6d

Regards

Anthony