Printing Large Scale Topo Maps USGS 7.5'

Tiffanie's Avatar

Tiffanie

05 Aug, 2018 05:01 PM

Hello! I am trying to print several large scale maps (20x30) for posters that cover about 1/6 the area of Washington state. It appears that the font and lines are slightly blurry when I view the preview (https://caltopo.com/i/0431 as an example). I am using USGS 7.5' and don't think I have any additional layers activated. Are there any tips/tricks on how to get a sharper image? Thanks so much!

Regards,
Tiffanie

  1. Support Staff 1 Posted by matt on 05 Aug, 2018 09:20 PM

    matt's Avatar

    That is a really wide scale - you're taking a map that is natively 1:24k and printing it at almost 1:200k. Short of zooming in and covering less area per page, there may be no way to get a readable resolution out of the map.

    That said, you're also looking at a JPEG image, which applies some JPEG compression to reduce the size. If you set the format at the top left of the print page to PDF, or replace the i with a p in the URL (https://caltopo.com/p/0431), it will give you a PDF that doesn't have the compression applied and should look a little sharper.

  2. 2 Posted by Tiffanie on 06 Aug, 2018 07:30 PM

    Tiffanie's Avatar

    Thank you so much for the quick response. I'll have to relook at my approach for printing large scale maps.

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:

»

Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts

Generic

? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac