How to download yahoo normal maps images

Some problems when downloading

How to view downloaded maps

How to combine small images into one big image

How to download Yahoo Normal Maps images?

See the screenshot. It is very easy to use.

Firstly, enter a project name, such like "NewYork_zoom_2.ynmd". All project files are saved as *.ynmd. If you want to continue a old project, click button "Open project".

There are 4 parameters (Left Longitude, Right Longitude, Top Latitude, Bottom Latitude) to define the area scope of images that you want to download.

The zoom parameter define the image precision.

And you can define how many threads you want to start to download at the same time.

Select a path to save the project and downloaded images, then click button "Download", OK, start downloading now ... !

When downloading, the log window will display the downloading process. When finished, the log will be saved to a file.

Parameters explainment:

1. Left Longitude: -180<value<180, for East, the value is positive, for West, the value is negative.
2. Right Longitude:-180<value<180, for East, the value is positive, for West, the value is negative.
3. Top Latitude:-90<value<90,for North, the value is positive,for South, the value is negative.
4. Bottom Latitude:-90<value<90,for North, the value is positive,for South, the value is negative.
5. Zoom: defines the image precision, the min zoom is 1. (For trial version, the min zoom is 6)
6: Threads number: defines how many threads you want to use to download at the same time. The max threads number is 8.

For longitude and latitude, the input measurement is degree. You can convert the measurement of "Degrees, Minutes,Seconds" to "Degrees" by click menu
"Tools->Convert 'Degrees,Minutes,Seconds' to 'Degrees'...".

Some problems:

1. If one makes too much requests, yahoo map will add its IP address to a blacklist.
If this happend, Yahoo Satellite Maps Downloader will show a messge in log window: May be your IP is banned by Yahoo. Then you must wait for some time or change to another IP.

2. For some area, there are not high precision images on yahoo's server, so may be you get a image like the followed:



. If this happend, you need to set larger zoom size to download. (The min zoom level is 1)

 How to view downloaded map images?

You can view downloaded maps without combining them into one big BMP.
We provide a tool : You can run it from menu "Tools"->"Map Viewer".

Then open a project from menu "File"->"Open project..." to view the map.

How to combine small images into one big image?

After downloading, all small images are saved on your disk. Then you can combine them into one big image map.

We provide a tool : You can run it from menu "Tools"->"Combine images... ".

The output big image is in BMP format. You can convert it to other format by yourself using some image tools such like PhotoShop.