[OpenLayers-Users] OpenLayers resolutions and scale questions

[Stephen Woodbridge]

On 3/21/2013 10:20 AM, Rob Hyx wrote:
> Thanks Worth, so how do you know if the scale is inches to inches or
> feet to feet, etc.? What is the default?

Scale is a ratio so it should be unit-less.

You can read it as one unit on the screen is equal to N units on the 
ground. 1:2000 inches === 1:2000 ft

-Steve W

> On Thu, Mar 21, 2013 at 10:03 AM, Worth Lutz <wal3 at mindspring.com
> <mailto:wal3 at mindspring.com>> wrote:
>
>     Scale is a ratio, for example:   1 inch = 24000 inches   -or-
>        1/24000   -or-  1 ft. = 24000 feet____
>
>     __ __
>
>     Here are some helpful links:____
>
>     __ __
>
>     http://trac.osgeo.org/openlayers/wiki/SettingZoomLevels ____
>
>     __ __
>
>     https://getsatisfaction.com/opengeo/topics/how_do_i_interpret_the_openlayers_scale
>     ____
>
>     __ __
>
>     __ __
>
>     Worth____
>
>     __ __
>
>     ------------------------------------------------------------------------
>
>     *From:*openlayers-users-bounces at lists.osgeo.org
>     <mailto:openlayers-users-bounces at lists.osgeo.org>
>     [mailto:openlayers-users-bounces at lists.osgeo.org
>     <mailto:openlayers-users-bounces at lists.osgeo.org>] *On Behalf Of
>     *Rob Hyx
>     *Sent:* Thursday, March 21, 2013 9:54 AM
>     *To:* openlayers-users at lists.osgeo.org
>     <mailto:openlayers-users at lists.osgeo.org>; users at openlayers.org
>     <mailto:users at openlayers.org>
>     *Subject:* [OpenLayers-Users] OpenLayers resolutions and scale
>     questions____
>
>     __ __
>
>     Hello all, I have a few questions that I can't seem to get cleared
>     up in the OpenLayers documentation. ____
>
>       * Someone asked me what is the units of measurement that are
>         displayed in the scale control? In other words 1:7M what? Or is
>         it unit-less since it's a ratio? Sorry if that's a dumb
>         question. ____
>       * Next, when you manually specify the resolutions of the map (i.e.
>         map.resolutions = [...,...,...];), what units are those? I
>         checked the map in the DOM inspector and it says the units are
>         'degrees', does that mean decimal degrees? ____
>       * Also if this or anything related to scale, resolution or
>         Geo-spatial accuracy in general is documented anywhere for
>         OpenLayers, can someone point me in that direction?____
>
>     Thanks in advance!____
>
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> --
> *HYX*
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