Linked Questions

3
votes
1answer
12k views

Google maps distance based on the zoom level [duplicate]

I have used google maps for displaying some locations using markers, based on the user's current location. User's current location is the center point of the map. The default zoom level is 12. In ...
6
votes
2answers
21k views

How to get current scale of a Leaflet map?

I've been looking through the Leaflet API to see if there is a getScale method or scale property of a map, and have't seen anything. Does anyone know if Leaflet provides a way to get the current map ...
1
vote
1answer
7k views

Printing map to scale

How to print this map (page) to 1:500 without georeferencing or without using any gis software. It is better to say that the marked line of 3 km should be 6 cm on paper (A4). See image:
2
votes
2answers
989 views

What is the significance of 591657550.5 as it relates to google maps scaling factor?

According to this gis stackexchange answer and this stackoverflow question the scale ratio for google maps at any given zoom level is 591657550.500000 / 2^(level-1). That's not the circumference of ...
3
votes
1answer
2k views

1m cell size equivalent value in decimal degree

I'm doing re-sampling pixel size in ERDAS 2014,I'm using input image(Indian terrain) in GCS_WGS_84 projection. Now I have to keep out put cell size as 1m,what is the 1m equvivalent value in Decimal ...
4
votes
1answer
547 views

Why do base and overlay only match at scale 1:1000 and 1:2000?

We are using GEOSERVER 2.1.4 to overlay WMS on GoogleMaps V3 with Openlayers . The problem we have is at different zoom levels the scale of the WMS overlay is different from the scale of the base ...
1
vote
1answer
734 views

WMS scale denominators and zoom levels: why are these tables different?

I'm trying to understand how WMS scale denominators translate to tile zoom levels. (Specifically, Google Maps zoom levels.) I found this answer to What ratio scales do Google Maps zoom levels ...
1
vote
0answers
169 views

How can I tile a region in Google Maps given a zoom level

I am searching for a way to generate a tiling of a grid region using Google Maps. I have found a way to generate a grid and as well as a reference for pixel to width ratios given a zoom level, but I ...
4
votes
0answers
86 views

Correct planet radius, for calculating metres per pixel?

I am putting together some code to create tiles from various maps, for various planetary bodies, but I am not sure which value of planet radius I should be using, for indicating the metres/pixel ...
0
votes
1answer
28 views

How to calculate offline map download size for a square km for each zoom level

I am working on estimation of how much will I have to download to make maps available offine at different zoom levels. What I am looking for is something like below. zoomLevel,sizeInKM,downloadInGB 1,...