how do you create a line graph??

[eski]

hey, im fairly new to developing and have no idea how i would go about creating a line graph, such as the one in the 'ipushups' app. Any body know how i would go about doing this or know of any tutorials that would explain??

[Stitch]

Originally Posted by eski

hey, im fairly new to developing and have no idea how i would go about creating a line graph, such as the one in the 'ipushups' app. Any body know how i would go about doing this or know of any tutorials that would explain??

Check out the AccelGraph Sample Code

[eski]

i searched for it and it couldnt find it?

[wuf810]

Originally Posted by eski

i searched for it and it couldnt find it?

Try AccelerometerGraph in Examples in Dev Center

[eski]

found it but the graphs so different to what im trying to do i wouldnt know where to start with that code. thanks any way

[rkp01_jec]

FYI to draw a line
This code constructs a triangle from a set of three lines.

// Draw a purple triangle with using lines
CGContextSetRGBStrokeColor(ctx, 255, 0, 255, 1);
CGPoint points[6] = { CGPointMake(100, 200), CGPointMake(150, 250),
CGPointMake(150, 250), CGPointMake(50, 250),
CGPointMake(50, 250), CGPointMake(100, 200) };
CGContextStrokeLineSegments(ctx, points, 6);


u can set any point to draw graph

[eski]

cool thanks, don't spose you know how id go about making the lines move to the numbers in a label? like in a graph.

[anils_das]

eski,

Did you find any framework for plotting graph in application? How you managed to add graph in application?

I got one framework for this named core plot. There is one good tutorial on integrating this to iphone application.

Using Core Plot in an iPhone Application | Switch on the Code

Since the project is in starting stage, many bugs and restrictions are there. So any other framework?

[eski]

no luck so far i just found that tutorial like 2mins ago lol, was just about to see if it would work

[anils_das]

Core plot supports only line graph in iphone OS. I have tried that and its working fine for me.

The main issue i found is in the axis label positioning. I have attached one sample screen shot of this.

When i contacted the project owner, he is working to resolve this issue.

[eski]

cool its a line graph that i want. the screen shot wont load up

How did you get the code of that site the... 'hg clone Revision ae158fc377: / core-plot"

im well confused, it telling me to download Mercurial, then when i click the link to do that theres not a link to download it to mac os x 10.5 but tells me to download python2.5...iv done that now what???

[anils_das]

I forgot how i downloaded that file...I have uploaded the 10.5 package for you in rapid share

RapidShare: Easy Filehosting

Download and install that. After that run these two commands

macmiexport LC_ALL=en_US.UTF-8
macmiexport LANG=en_US.UTF-8

Then you can download the source using hg clone command

[anils_das]

Eski,

I found one more method to add graph in our applications. Its using the google chart API

Developer's Guide - Google Chart API - Google Code

I think this will help you...

[eski]

thanks! that made it a lot easier i managed to get all the code and i follwed the instructions exactly but now it keeps coming up with 1 error basicly saying i need a ';' before '{' but then it dosnt fix it and makes more errors appear then u fix them then it goes back to the first one taking me in circles!! well annoying!

that google api does look helpful but i dnt really understand it and where id put the code. would it mean the user would have to have access to the internet in order for th graph to work??

[eski]

the CPLayerHostingView seems to be cousing problems to! did you have this problem?

[anils_das]

no...i didnt get any error.... There will be one warning in the interface builder for the CPLayerHostingView. No issue with that.

what is the error you are getting?

[eski]

- (IBAction)pushupViewControllerid)sender
{

//(error:expected ';' before '{' token)

pushupViewController *push = [[pushupViewController alloc] initWithNibName:nil bundle:nil];
[self presentModalViewControllerush animated:NO];
}


...so from that im gathering i need to put ';' after '(id)sender' ..

- (IBAction)pushupViewControllerid)sender;
{


but then once i do that it it comes up with 2 errors...

- (IBAction)pushupViewControllerid)sender;
{
//(error:expected identifier or '(' before '{' token)

and....

- (void)viewDidLoad {
//(error:expected ' ;' before ' {' token)

[super viewDidLoad];

then basically it passes errors along as i try and fix them.. so im thinking that the actual problem is in the header file

what you think??

[eski]

and that googl chart api i get now but ivcreated a UIWebView which works fine but when i try to link it to the google api chart e.g it dosnt load any thing

do you know why this is?

thanks for all the help

[eski]

hey, the problem was i had forgot to import the cocoaTouch.h file!

now im just stcuk with 1 error...

CPPlotSymbol *greenCirclePlotSymbol = [CPPlotSymbol ellipsePlotSymbol];
greenCirclePlotSymbol.fill = [CPFill fillWithColor:[CPColor greenColor]];
greenCirclePlotSymbol.size = CGSizeMake(2.0, 2.0);
xSquaredPlot.defaultPlotSymbol = greenCirclePlotSymbol;
//(error:request for member 'defaltPlotSymbol' in something not a structure or a union)

do you know what i need to do or change here??

thanks

[eski]

ok, i have started from scratch on a new project done everything it says to do, im getting no errors in my code now

but i am getting one error in the targets..

//No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=armv6, VALID_ARCHS=i386).

what does this mean??