Basemap:'snapback' on line crossing global plot edge

This is probably for Jeff but maybe someone else has an answer.
If I plot a satellite orbit on the globe when the groundtrack passes the edge of the map - in this case the Greenwich meridian - the line 'snaps back ' across the plot where the line picks up on the other side of the globe.
The attached plot shows the problem, note the line across the northern polar regions. I have encountered this before. In this case I can break the ground track into two segments, one up to and including Greenwich and the other from Greenwich eastward.

My question: Is there a more elegant way to deal with this situation in Basemap? I have a nagging feeling that Jeff has addressed this issue but I cannot find anything in the examples.

--Jim

orbit_00784.png

I don't think so. We always manually check for horizontal and vertical axis crossings and split the line as many times as necessary.

···

At 03:31 PM 8/2/2007, James Boyle wrote:

This is probably for Jeff but maybe someone else has an answer.
If I plot a satellite orbit on the globe when the groundtrack passes
the edge of the map - in this case the Greenwich meridian - the
line 'snaps back ' across the plot where the line picks up on the
other side of the globe.
The attached plot shows the problem, note the line across the
northern polar regions. I have encountered this before. In this case
I can break the ground track into two segments, one up to and
including Greenwich and the other from Greenwich eastward.

My question: Is there a more elegant way to deal with this situation
in Basemap? I have a nagging feeling that Jeff has addressed this
issue but I cannot find anything in the examples.

--Jim

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Ted Drain wrote:

I don't think so. We always manually check for horizontal and vertical axis crossings and split the line as many times as necessary.
  
One other solution might be to not plot a line, but use scatter to plot the individual points. If there are enough of them, it will look OK.

-Jeff

···

At 03:31 PM 8/2/2007, James Boyle wrote:
  

This is probably for Jeff but maybe someone else has an answer.
If I plot a satellite orbit on the globe when the groundtrack passes
the edge of the map - in this case the Greenwich meridian - the
line 'snaps back ' across the plot where the line picks up on the
other side of the globe.
The attached plot shows the problem, note the line across the
northern polar regions. I have encountered this before. In this case
I can break the ground track into two segments, one up to and
including Greenwich and the other from Greenwich eastward.

My question: Is there a more elegant way to deal with this situation
in Basemap? I have a nagging feeling that Jeff has addressed this
issue but I cannot find anything in the examples.

--Jim

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