Generating Graph with 2 Y Values from Text File
I have remade my original post as it was terribly formatted. Basically I would like some advice / tips on how to generate a line graph with 2 Y Axis (temperature and humidity) to display some information from my text file. It is contained in a textfile called temperaturedata.txt I have included a link to one of my posts from the JpGrapher forum only because it is able to display the code clearly.
I understand that since it is JpG开发者_开发技巧raph problem I shouldn't post here however the community here is a lot more supportive and active. Many thanks for all your help guys in advance!
my code
I don't see any reason why you shouldn't post here about jpgraph. And I don't see why you shouldn't post your sample code and data here, either.
The code you've posted on the other site is broken. Check line #42.
Furthermore, you're passing JpGraph a single row (specifically, the last row) via $keyval
. $data
is where all your data is stored, though in a wrong format. A very quick fix was:
$keyval = array();
$keyval['time'] = array();
$keyval['count'] = array();
$keyval['temperature'] = array();
$keyval['humidity'] = array();
if ($file) {
while (!feof($file)) {
$line = trim(fgets($file));
if (strlen($line)) {
$fields = explode(":", $line);
$keyval['time'][] = $fields[0];
$keyval['count'][] = $fields[1];
$keyval['temperature'][] = $fields[2];
$keyval['humidity'][] = $fields[3];
}
}
fclose($file);
}
which transposed $data
and renamed it $keyval
. (Where it used to hold time data in $data[x]['time']
, it now holds it in $keyval['time'][x]
.) And we're passing $keyval['temperature']
, which is a simple array of temperature values.
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