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Re: [ferret_users] Plot a Hovmoller over the end-of-year break?

Hi Michael,
I have been able to fix this.

Normally Ferret fills only to the coordinate location, just between grid box centers, not out to the grid-box edges. For a modulo plot we should be able to fill to the grid box edges, as you did when you got the full data range using /HLIMIT.

Ferret collects up shapes with the same color definition for efficiency, and in this case was finding that it was going to draw a rectangle across the entire page, but it was erroneously being marked as not lying within the plot area. So this will be fixed in the next Ferret release.


On 3/7/2016 8:43 AM, Michael Erb wrote:
I want to use the "fill" command to make a Hovmoller plot over the course of the year for a climatological variable. By default, ferret doesn't interpolate over the end-of-year break, leaving white space for the first half of January and the last half of December when using monthly data. This doesn't look great for a published figure. Is there a good way to ensure that data is plotted there?

One thing that I tried was to define the timespan and the hlimit to get ferret to plot that time of the year as well (e.g. fill/lin/key/t=1-dec-1599:1-feb-1601/hl=1-jan-1600:1-jan-1601 t_ref[d=1,x=@ave]). This fixes my first problem, but introduces a new one: all latitudes where the color of the plot doesn't change over the course of the year are plotted white. I assume the problem is because the left and right "edges" of the data are outside of the plot, but I'm not sure how to fix it. I've attached a figure to show what I mean. The plot on the left is default ferret behavior. The plot on the right is my attempt to fix it, but with the horizontal white bands.

Is there a better way to do what I'm trying to do?


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