r - Remove factors from boxplot that have no data -


I have a data frame with two factors: Peel - either "standard" or "delay" and wafer - wafer But what I want as a factor:

  ** peel ** ** wafer ** Standard 122 standard 123 delay 124 delay 125  

(Sorry) I'm trying to post the actual data, but it appears that it has come out in a foolless format)

When I press my data box for a variable against both factors I get the difference on the X axis, where there is no data:

  boxplot (von.fwd ~ wafer * peel, data = df, las = 2)  

I have tried posting an image but apparently I need 10 to do this reputation

The data is unavailable because it does not exist. I do not want it to plot the difference. I have seen the code in the droplevel code, but I do not want to leave all my factors, only some combination of factors

Is there no way to say that there is no data, Do not conspirate those factors where

many thanks

Pete

  Peel ERF Wafer Device Width Length Von.fwd Vth.fwd STS.fwd On.Off.fwd Ioff.fwd Von.rev Vth.rev STS.rev On.Off.rev 1 Standard 482 2618 06.18A 1500 3-0.0156 2.5960 0.2382 4,570,000 1.82e-11 0,8750 3,2682 03772 894000 2 Standards 482 2618 06.18B 15003 0,2750 1,4167 0,2203 1860000 8.67e-12 0,9688 2,0433 0,3016 2780 00 3 Standard 482 2618 06.19A 1500 3 0,1907 2,7658 02460 7410000 1.01e-11 1,0938 3,4233 0,3696 1360000 4 Standard 482 2618 06.19B 1500 3 -29060 2,9606 0, 7441 1570000 3.00e-11-27809 2,7317 0,8494 475000 5 Standard 482 2618 06.20A 1500 3,1749 2,7362 0,2514 8670000 8.40e-12 1,0937 3,397,035 2360000 6 Standard 482 2618 06.20B 1500 3 0.1157 2.6 968 0.2426 7300000 9.91e-12 1.1250 3.4133 0.3828 1230000  

One option (so as to Peel and wafer to combine in a new aspect is your data.frame is considered Df ):

edit

sorry It does not look like:

  df $ NewFactor & LT; -paste ($ peel, df $ wafer df) df $ NewFactor & LT; -factor (df $ NewFactor)  

This is the reason why you will give each combination as a factor, but there is no missing combination. You can then use the df $ newFactor in your boxplot function.


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