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rxplot displaying wrong values

asked 2012-03-15 10:26:27 -0500

TommyP gravatar image

I publish a NavSatFix message on a topic. Using rostopic echo I can see that the longitude value is 13.475883. But when plotting the value with rxplot I get a value around 0.016.

I also observed similar behaviour for one of my own messages containing a set of float64.

Any ideas?

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answered 2012-03-16 09:20:37 -0500

kwc gravatar image

Are you sure its displaying the wrong value? matplotlib, which rxplot uses, sometimes readjusts the y-axis if the value range is small so that the Y-value is an offset from a fixed value. The fixed value will be displayed on the axis as well.

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It seems you are right. Clicking on the line show the correct value. But I saw no fixed value displayed. But doing a configure I then saw the fixed value on the top. It was displayed but under the "menu" so you did not see it. This was very confusing.

TommyP gravatar image TommyP  ( 2012-03-16 10:36:41 -0500 )edit

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Asked: 2012-03-15 10:26:27 -0500

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Last updated: Mar 16 '12