How to change direction of the axis?

[YuryPakhomov]

I want to direct the axis in the opposite direction. I can't find it in the documentation or examples

[run4flat]

There is no built-in way to flip the direction of the axes. In the meantime, here is a hack to achieve what you want. You can flip the sign of your input data and then override the axis label printing via the format_tick attribute. It looks like I never documented this attribute! But you can see it in action in the Synopsis for PDL::Graphics::Prima::Axis. See https://metacpan.org/pod/PDL::Graphics::Prima::Axis#SYNOPSIS

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