Pchart: X axis, too many ticks

Question

I have quite a large dataset, about a 1000 values. (temperature graph)

As you can see i have too many ticks between the hours, i only want one tick per hour.
Now it's a very think black line, how can i fix this?

The x axis array is like this:
[2] = 1
[3] = NULL
[4] = NULL
[5] = 2
[6] = NULL
etc

@Salil Momin, thats all i use to make the linegraph. Pchart library is available on the internet for free. — HyperDevil, May 03 '12 at 17:54
So `NULL`'ing didn't help ya? How come.... ^^ http://stackoverflow.com/q/10435986/367456 — hakre, May 03 '12 at 18:54
@hakre: yes the NULL now hides the X label so that is working fine, now i need to hide the small "tick line" for the values other then the hours.. — HyperDevil, May 03 '12 at 19:02

score 2 · Answer 1 · answered Sep 12 '12 at 13:41

2

In the scale settings, you must set the LabelSkip.

$labelskip = 1000/24; // values = 1000, hours = 24
$scaleSettings = array("LabelSkip"=>$labelskip);    
$myPicture->drawScale($scaleSettings);

answered Sep 12 '12 at 13:41

Yannis

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score 0 · Answer 2 · answered May 03 '12 at 18:00

0

The error was generated form $MyData->setSerieTicks("Time",1000); you have 2 lines in your chat cahnge it to $MyData->setSerieTicks("Time",1); you would see the difference

answered May 03 '12 at 18:00

Baba

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Hold on let me run it my self – Baba May 03 '12 at 18:08
Remember i have about a 1000 values, so i need to get rid of some x axis ticks, but not the values itself in the graph. – HyperDevil May 03 '12 at 18:08
Just tested it 100 values and this not have such used exactly this code http://wiki.pchart.net/doc.chart.drawlinechart.html ... what version og pChart are u using – Baba May 03 '12 at 18:18
2.13, can you try with a 1000? – HyperDevil May 03 '12 at 18:24
has memory time out only used for($i = 0 ; $i < 200; $i++) { $time[] = mt_rand(1,20); $temp[] = mt_rand(0, 10); } – Baba May 03 '12 at 18:30
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you are connecting to a database and i don't have such datata – Baba May 03 '12 at 18:47

Pchart: X axis, too many ticks

2 Answers2