You can set the GetMap request pixel limit globally to affect the resolution of the WMS maps you receive. Remember that increasing the pixel limit also means the retrieval process will take longer, but will produce better quality images. To override these default limits, see Adding a WMS Server.
To set the GetMap request pixel limit globally:
- On the PRO tab, click Options, and Web Services to open the Web Services Preferences dialog box.
- Select the options in this dialog box according to your needs.
WMS GetMap Pixel Limits
The GetMap Pixel Limits option represents the maximum number of pixels (in width/height) that a map request is limited to. The GetMap request is designed to retrieve the highest resolution map image as is necessary to render the image on the screen, for a printer, or for an export file.
This option prevents the request from going higher than the specified values. Different servers have different limits, so you can set the limit that works best for your environment.
Unfortunately, servers may not report their limits to us, so if the GetMap request fails, it means that you have entered a value that is too large for that server. Typically, large GetMap requests occur when you are printing or exporting windows containing WMS images. This happens because printing and exporting occurs at larger sizes and/or higher resolutions than on-screen display requires.
Max Width – Specifies the maximum number of pixels for a GetMap request in the X direction.
Max Height – Specifies the maximum number of pixels for a GetMap request in the Y direction.
- When you have completed your selections, click OK to save them.