×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Matlab contourf colorbar help

Matlab contourf colorbar help

Matlab contourf colorbar help

(OP)
Hi,
I am using contourf to plot antenna near-field patterns in dB, and I am trying to force the colorbar to start at 0 (my values are normalized, so they are -'ve dB).  The highest value I have is about -2dB, but I want the colorbar to start at 0 dB, not -2 dB.  
Any ideas?  (hopefully I'm just missing the obvious)

RE: Matlab contourf colorbar help

you have data<0 but want the plot to start from 0?
what do you want the negative values to be? truncated?
you can just offset the data to a temporary matrix and plot it, and it might be easier this way.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources