Bar Chart Trouble

General Discussion Other

wired632

in General Discussion • Other • 11 months ago

I'm trying to write a code that takes in a tsv file and makes a bar chart, with words on the x-axis and numbers on the y-axis, but I don't know where to start. I have tried modifying pre-made codes but they are either too specific (only working with the data made for the example) or too general (Everything is put in by hand in the code itself, not by taking in a file). Any suggestions where to start?

Replies(4)

not_55

Re: Bar Chart Trouble

11 months ago

Have you got any code yet? The good news is that it shouldn't be too hard to do

I would break this down into:

1 Parsing the input file (I take it you mean a .csv with tabs as the separator?) and getting the values into an array or whatever.
2 Drawing the graph (probably the easy bit!)

So first of all, how exactly is the data stored? Do you have colum labels in the first row with each row on a separate line of the input file like this :

Age    Height
7    4
8    4.2
8    4.7
9    4.9
11    5.1
12    4.9

Chrisir

Re: Bar Chart Trouble

11 months ago

was just about to post this

String lines[] = loadStrings("list.txt");
println("there are " + lines.length + " lines");
for (int i =0 ; i < lines.length; i++) {
  println(lines[i]);
}

from
http://www.processing.org/reference/loadStrings_.html

then search split (with "\t") in the reference

http://www.processing.org/reference/

Good luck!