Hi Ryo, It seems to be a case of when does Ferret know things as it's
working through a set of expressions and operations. In your
example, change it to an implied range of averaging in X, yes? set data levitus_climatology yes? let mt = temp[x=@AVE,y=90S:90N@AVE,z=0:6000@AVE] yes? let a = {0, 0, 1, 1} yes? plot/line/symbol/vlimits=-1:4/hlimits=0:5 a*mt **ERROR: inconsistent sizes of data regions: can't label X axis of MT It really should treat these two examples the same, so this is a bit of a bug -- It's incorrectly deciding it can't resolve the context in X when combining the X information for variables A and MT. --Ansley On 3/29/2018 7:26 PM, Ryo Furue wrote:
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