CODEWITHSUNDEEP
objective-cxcodecore-plot
joshua
joshua

Reputation: 1

how to set new plot data for bar chart using core-plot?

I am new to objective-c and xcode. It would be very thankful if someone can point how to set new plot data for bar chart using core-plot. I need to set data like : y-axis and x-axis : as (10,1), (5,2), (20,3), (15,4) and the output should come as :

---------------------
30
25
20      #
15      # #
10  #   # #
5   # # # #

    1 2 3 4
---------------------

It would be great if someone can provide me the .m and .h file Thanks in advance

Joshua

Upvotes: 0

Views: 820

Answers (2)

ciwol
ciwol

Reputation: 355

The function numberForPlot is where you define your datas you want to plot:

   -(NSNumber *)numberForPlot:(CPPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index 
    {

NSNumber *num = nil;
    if ( [plot isKindOfClass:[CPBarPlot class]] ) {
        switch ( fieldEnum ) {
            case CPBarPlotFieldBarLocation:
            num = (NSNumber *)[NSNumber numberWithFloat:[[*yourArray* objectAtIndex:index] floatValue]];
                break;
            case CPBarPlotFieldBarLength:
                num = (NSNumber *)[NSNumber numberWithFloat:[[*yourOtherArray* objectAtIndex:index] floatValue]];
                break;
        }
    }
    return num;
}

You just have to insert datas in your arrays.

Upvotes: 0

Eric Skroch
Eric Skroch

Reputation: 27381

Look at the programs in the examples folder in your Core Plot directory. All three CPTestApp programs (Mac, iPhone, and iPad) have bar plots.

Upvotes: 1

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