[R] Barplot with Sorted X-Axis

[Jim Lemon]

Gundala Viswanath wrote:
> Hi,
>
> I have a binned data that looks like this.
>
>   (8.048,18.05] (-21.95,-11.95] (-31.95,-21.95]   (18.05,28.05] (-41.95,-31.95]
>              81              76              18              18              12
>     (-132,-122]     (-122,-112]     (-112,-102]     (-162,-152]   (-102,-91.95]
>               6               6               6               5               5
> (-91.95,-81.95]     (-192,-182]   (28.05,38.05]   (38.05,48.05]   (58.05,68.05]
>               5               4               4               4               4
>   (78.05,88.05]     (98.05,108]     (-562,-552]     (-512,-502]     (-482,-472]
>               4               4               3               3               3
>     (-452,-442]     (-412,-402]     (-282,-272]     (-152,-142]   (48.05,58.05]
>               3               3               3               3               3
>   (68.05,78.05]       (118,128]       (128,138]     (-582,-572]     (-552,-542]
>               3               3               3               2               2
>     (-532,-522]     (-422,-412]     (-392,-382]     (-362,-352]     (-262,-252]
>               2               2               2               2               2
>     (-252,-242]     (-142,-132] (-81.95,-71.95]       (148,158]   (-1402,-1392]
>               2               2               2               2               1
>   (-1372,-1362]   (-1342,-1332]     (-942,-932]     (-862,-852]     (-822,-812]
>               1               1               1               1               1
>     (-712,-702]     (-682,-672]     (-672,-662]     (-632,-622]     (-542,-532]
>               1               1               1               1               1
>     (-502,-492]     (-492,-482]     (-472,-462]     (-462,-452]     (-442,-432]
>               1               1               1               1               1
>     (-432,-422]     (-352,-342]     (-332,-322]     (-312,-302]     (-302,-292]
>               1               1               1               1               1
>     (-202,-192]     (-182,-172]     (-172,-162] (-51.95,-41.95]   (88.05,98.05]
>               1               1               1               1               1
>       (108,118]       (158,168]       (168,178]       (178,188]       (298,308]
>               1               1               1               1               1
>       (318,328]       (328,338]       (338,348]       (368,378]       (458,468]
>               1               1               1               1               1
>
>
> How can I plot the data so that the bin is sorted from most negative
> in the left to most positive in the right?
>
> Currently my graph look like this:
>
> http://docs.google.com/Doc?id=dcvdrfrh_5cm5qkchw
>
> Notice that it is unsorted at all,
> In particular the second bar (value = 76)  id placed on the right  to the first.
>
>
>   (8.048,18.05] (-21.95,-11.95]
>              81              76
>
>
> This is the command I use to plot:
>
> barplot(x,ylab="Number of Unique Tags", xlab="Expected - Observed")
>
>   
Hi Gundala,
How about sorting the levels of the data first:

attr(mydata,"levels")<-sort(levels(mydata))

or sorting the columns of the above table if that is what you are using 
to plot.

Jim