Avenza Resources Blog
We often get asked about the resolution of spatial images and the affects of scaling them in Adobe Illustrator CS4.
When scaling an image in Adobe Illustrator (using the Scale tool or the MAPublisher Register Image function) it will not resample the image (the image still has the same number of pixels). So effectively scaling down an image increases the image PPI (pixels per inch). In terms of geographic image resolution (size of a pixel in world unit), it does not change. The image resolution is dependent on the source of collection.
When working with map documents and large datasets, you may experience a slight decrease in performance in Adobe Illustrator. You may also experience large AI files after saving. This may be due to the number of layers and amount of spatial data being imported by MAPublisher. One possible solution to increase system performance is to buy more RAM, generally 2GB for average users and 4GB or more for power users.
However, there are several great (and free) options to try before buying another stick of RAM. These methods may sound obvious, but are often overlooked.
Welcome to the Avenza Resources Blog, created to bring cartographers, GIS users, map lovers and Avenza software experts together to share techniques, theory and discussions about map making.
We will have blogs about:
- MAPublisher and Geographic Imager functions, tips and tricks
- Mapping techniques and workflows
- Mapping related theory