Problems with wrapTo180, creates lines on map

Hello,

I have a longitude vector that I want to convert from 0-360 to -180 - 180 The data shows perfectly find on a global map when in its original 360 form, but once I use wrapTo180, there seems to be lines all across my global map.

Has anyone else had this problem?

If so, how do I fix it?

Thank you,

Melissa

[Chad Greene]

Can you upload an image with lines? Can you repeat the problem using dummy data such as Z=peaks(180)? If so, upload some code that we can use to replicate the problem.

[Melissa]

Hi Chad,

I will just upload the files so you know what I'm dealing with. I've never had this problem before with wrap, so it might be this specific data?

[Brian DeCicco]

Melissa, I'm having the same issue as you are here. Did you ever get resolution to this?

Answer 1

[Rob Comer]

Instead of wrapping your longitudes, try using the maptriml function with latlim = [-90 90] and lonlim = [-180 180]. Because these limits span the globe, this won't really trim away any data. What it will do is cut your data on the 180-degree meridian. This cut should eliminate the spurious lines that you're seeing across your global map.

[Melissa]

When I use this approach, I get the error:

Error using checklatlon (line 26) Function MAPTRIML expected its first and second input arguments, LAT and LON, to match in size.

Error in maptriml (line 17) checklatlon(lat, lon, mfilename, 'LAT', 'LON', 1, 2)