Parula image axis limits

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Barrie Dams Barrie Dams
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Parula image axis limits

Hi,

I would like to save a vector image as a parula u-component image: is it possible to change the axis upper and lower limits? For example, if an image's lowest u component value is 0.01 metres per second, can you reduce the lowest limit on the axis to below zero? This would enable me to compare with another image where u component values do become negative.

Many thanks,
Barrie.