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Re: Label Bar Chart from data

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99784] Re: [mg99757] Label Bar Chart from data
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Thu, 14 May 2009 01:42:26 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

mydata = {{44970, 2357.7}, {54324, 1859.34}, {49500, 1797.44}, {54161, 
    1432.26}, {49505, 1421.2}, {49605, 1292}, {54640, 1260}, {39503, 
    760}, {49525, 711.31}, {43324, 617.1}};

BarChart[#[[2]] & /@ mydata, ChartLabels -> (#[[1]] & /@ mydata)]

BarChart[Last /@ mydata, ChartLabels -> First /@ mydata]

BarChart[Last /@ #, ChartLabels -> First /@ #] &[mydata]

BarChart[mydata[[All, 2]], ChartLabels -> mydata[[All, 1]]]

BarChart[#[[All, 2]], ChartLabels -> #[[All, 1]]] &[mydata]

% === %% === %%% === %%%% === %%%%%

True

However, to find anything on this chart by label (particularly if "actual data is much larger"), then sorting might be useful.

sortedData = Sort[mydata];

BarChart[Last /@ #, ChartLabels -> First /@ #] &[sortedData]


Bob Hanlon

---- "Charles L. Snyder" <clsnyder at gmail.com> wrote: 

=============
Given

mydata={{44970, 2357.7}, {54324, 1859.34}, {49500, 1797.44}, {54161,
  1432.26}, {49505, 1421.2}, {49605, 1292}, {54640, 1260}, {39503,
  760}, {49525, 711.31}, {43324, 617.1}}

This should be simple, but I can't seem to find the answer. I want a
BarChart of the second values {2357.7, 1859.34,....}, labeled with the
corresponding first value. This comes close, but all "bars' are
labeled with 44970, not sequentially.
;
BarChart[{#[[2]]} & /@ mydata, ChartLabels -> {#1} & /@ mydata]

The actual data is much larger, precluding simply entering the ten
values given above. Can someone point me in the right direction?

Thanks in advance


--

Bob Hanlon



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