The ratio between distances on a map and distances in the world

learn more… | top users | synonyms

8
votes
0answers
336 views

Scale in printed map (mxd) is different in code to manual printing

This question is related in part to a previous question I have asked. I have tried printing an A3 mxd with the Print Active View code as published by ESRI and have changed only one line of code and ...
7
votes
6answers
623 views

Maps zoomed around specific locations (magnifying glass effect)

How do I create a static map where the scale varies based on location? Example: to drive from a specific location X in Albuquerque to a specific location Y in Chicago, I want to "zoom" around X and ...
10
votes
2answers
986 views

Surface distance on DEM between two coordinates

Given two coordinates on a digital elevation model (DEM), how do I compute the actual distance traveled between the two locations, assuming a straight line route? How will changing the resolution of ...
3
votes
1answer
1k views

MapInfo Bing Aerial resolution/scale

I am using MapInfo to display some Bing aerial photos. It seems as if it is using the wrong scale of imagery - they look blurred, as if the image has been enlarged. Is there a way to force it to use ...
2
votes
1answer
611 views

I have several layers (polylines and polygons) that are of the same area but they don't overlap in ArcMap as they should, what do I do?

For my GIS project for my class, I have downloaded several vector layers from different websites (polyline of the continental divide, a boundary polygon of New Mexico, a rivers and water bodies layer ...
3
votes
2answers
611 views

Silverlight Map with ESRI Imagery

I have a map service which is using data from a local repository, viewed using the ESRI Silverlight API. I am dynamically adding a tiled map service for imagery from ESRI. The map service can be ...
2
votes
2answers
879 views

MapServer computes wrong map scales — off by factor 0.77. Or is it just me?

I've noticed in a current project that MapServer seems to get the map scale wrong, or then I'm wrong, but don't see how. My mapfile contains the following definitions: RESOLUTION 72 # this is the ...
7
votes
2answers
9k views

OpenLayers: Use scales instead of resolutions

Venturing around in the OpenLayers source code, it seems like everything related to zoom-levels is done using resolutions. Fair enough since this related directly to screen space. I would like ...
3
votes
2answers
871 views

Custom scalebar units in ArcMap

Is it possible to create a scalebar in ArcMap that shows distances in custom units? I understand how to do this manually, but it would be great if I could define a custom unit of measurement (let's ...