core-plot

问题 I am using the Core Plot framework, and attempting to work through the example applications. Are there any tutorials for using this framework? Specifically, how do you provide labels for X and Y axes in a chart? 回答1: Unfortunately, given the fact that the API of the framework has not yet stabilized, there aren't that many tutorials out there, and several of the ones that do exist are already outdated. The example applications really are the best sources to see how to work with the framework.

问题 I am using CorePlot 0.3, everything was ok until I upgraded XCode to 4.4 (2 days ago), CorePlot failed to build and I got some errors with message: clang: error: -Z-reserved-lib-stdc++: 'linker' input unused when '-c' is present Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1 I have tried to search and it seems there are many people have a same problem, and I also found some suggestions and solution to fix it, I have

问题 I want to use core-plot for drawing line graph dynamically. data won't come at a time, we will be receiving point by point dynamically. Is it possible to draw the chart dynamically using core-plot i.e drawing point by point as on when we receive the (x,y) point? Please help me, Thanks. 回答1: Yes, you can do this reasonably easily. For each received data point, append it to an array of values to display. As these data points come in, call -reloadData on the Core Plot graph (or just the

问题 I'm working on building a Swift iOS app, and integrating CorePlot via CocoaPods. Things are working pretty well, but I'm running into a problem where I'm unable to call certain methods in a CorePlot class. I'm not sure if this is a compiler bug or if I'm not understanding the way the methods map over. Basically, I have this variable called xRange, and I'm casting as CPTMutablePlotRange, then attempting to call the expandRangeByFactor method on it, but XCode is complaining that it isn't found.

问题 I have attached the entire code which I am using but the x-axis label is not being generated .I have no clue where it is going wrong .I am a noob in core plot .PLease Help me out .Thanks in Advance and Happy New Year. #import "BarPlotViewController.h" @interface BarPlotViewController () @end @implementation BarPlotViewController #define BAR_POSITION @"POSITION" #define BAR_HEIGHT @"HEIGHT" #define COLOR @"COLOR" #define CATEGORY @"CATEGORY" #define AXIS_START 0 #define AXIS_END 50 //

问题 Is there a way I can use coreplot scatterplot x-axis with epochtime? This is the plot range that I used. plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(1329375688) length:CPTDecimalFromFloat(100)]; I'm reading the epoch values from a file. -(void)plot1{ // Start with some simple sanity checks before we kick off if ( (self.scatterPlotView1 == nil) || (self.graphData == nil)) { NSLog(@"TUTSimpleScatterPlot: Cannot initialise plot without scatterPlotView1 or data.");

问题 I am using code from this link . And currently If I have 50 bar columns or 150 bar columns then the labels below is compressed and I would like to have horizontal scroll on x-Axis instead of having compressed x-Axis. I have tried this: plotSpace.xRange = CPTPlotRangeplotRangeWithLocation:CPTDecimalFromInt(-1)length:CPTDecimalFromInt(50)]; Attaching code from the file : #import "GraphView.h" @implementation GraphView - (void)generateData { NSMutableDictionary *dataTemp = [[NSMutableDictionary

问题 I have a y-axis boundary from 0 to 100 and an x axis boundary from 0 to 10. When I plot data points (0,85) and (1,86), only the portion of the plot with data points is shown. I understand how this is useful, but in my case I need the entire axis shown, unscaled. Is there a way to show the complete axes, without zooming to the data points? Thanks for your help. 回答1: Is more a hint than an answer.. but, as I already said in comments: you can try to remove "scaleToFitPlots" and set xRange and

问题 I am using Core-Plot library to draw bar chart in iPhone. I am using CPTTestApp-iPhone to my training. In my project the bar appear very good thats looks like from the sample project. But, i dont where i need to give the values to draw the bars. Then, in my actual project i need to change the bar values dynamically. How can i do this? Please help me to find out the solution. Thanks in advance. Below the sample datasource code, #pragma mark - #pragma mark Plot Data Source Methods -(NSUInteger

问题 I implemented corePlot in my xcode project. I'm trying to "explode" a slice of the pie chart with animation. Here is the method I'm using: - (void)radialOffsetForPieChart:(CPTPieChart *)pieChart recordIndex:(NSUInteger)idx { if (myIndex == idx) { return 20; } return 0; } I have another method which calls [pieChart reloadRadialOffset]; . For example: - (void)thisMethod { [pieChart reloadRadialOffset]; } How can I animate the reloadRadialOffsets ? 回答1: I just added an example to the "Simple Pie