core-plot

问题 I'm using coreplot on ios and have a scatterplot. Is it possible to vary the line style depending on the point being plotted? I've only found how to set it for the whole plot. 回答1: Yes. Make sure your graph delegate conforms to CPScatterPlotDelegate by implementing - symbolForScatterPlot:recordIndex: . Here's a working implementation which returns a different symbol for the index which matches _selectedIndex : - (CPPlotSymbol *)symbolForScatterPlot:(CPScatterPlot *)plot recordIndex:

问题 I would like to draw a line graph in the same style as the one posted in this Core Plot issue. Is there a tutorial out there on how to create a graph like this in Core Plot? 回答1: Use the below links this will help you. http://www.switchonthecode.com/tutorials/using-core-plot-in-an-iphone-application http://code.google.com/p/s7graphview/ http://code.google.com/p/core-plot/wiki/PlotExamples 来源： https://stackoverflow.com/questions/6420717/how-can-i-customize-a-core-plot-graph-to-mimic-this-style

问题 I am trying to incorporate CorePlot into my project. I finally manages to get my header files recognized but i keep getting the following error in my main.m. "Expected expression before '@' token" int main(int argc, char *argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([ProjectFiveAppDelegate class])); } } 回答1: The @autoreleasepool syntax was introduced fairly recently, you probably need to install Xcode 4.2. Another possibility is that your compiler

问题 I am Using CorePlot in my app, and I want to display a annotation over the plotSymbol. I haven't found any code in the sample projects of the latest 0.9 version of CorePlot. After some research i have come to this point: - (void)scatterPlot:(CPTScatterPlot *)plot plotSymbolWasSelectedAtRecordIndex:(NSUInteger)index { CPTLayerAnnotation *annot = [[CPTLayerAnnotation alloc]initWithAnchorLayer:graph]; CPTBorderedLayer * logoLayer = [[(CPTBorderedLayer *) [CPTBorderedLayer alloc] initWithFrame

问题 How to display the coreplot legend like this? country flag,country name under that line(resembled in the graph) func configureLegend() { guard let graph = hostView.hostedGraph else { return } let legend = CPTLegend(graph: graph) graph.legend = legend graph.legendAnchor = .topLeft graph.legendDisplacement = CGPoint(x: 50.0, y: -2.0) legend.fill = CPTFill(color: CPTColor.clear()) legend.swatchSize = CGSize(width: 10.0, height: 10.0) legend.numberOfRows = 1 legend.entryPaddingBottom = 12 let

问题 I have this problem since a long time and I cannot find anything to solve this. I read several forum but was not able to find a working solution. I have the following code: // Adjust graph using above data CPXYPlotSpace *plotSpace = (CPXYPlotSpace *)graph.defaultPlotSpace; plotSpace.xRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(-10) length:CPDecimalFromFloat(xmax + 17)]; plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(-450) length:CPDecimalFromFloat

问题 I have a graph with Y and X axises drawn on the default plot space along with the primary plot, and then I have separate plot spaces for auxiliary plots each with their own Y-axes (the X-axis is the same for all plots). I'm implementing buttons to switch the auxiliary plots on and off and I would like this to include basically the whole plot space (plot, custom y-axis, and labels of the custom y-axis). There doesn't seem to be any 'hidden' property for the plot space, and all-tough the plot

问题 I would like to create 3 colour bands in my graph but I think I am doing something wrong. The y values should range from 0 to 1024 and I would like to have a first colour band from 0 to 300, a second one from 300 to 600 and a third one from 600 to 1024. However the code I wrote creates 6 bands instead of 3 and it seems to ignore the 1024 limit . Here is the resulting graph and the code I used: Graph: It should have only 3 bands , plus it seems to ignore the fact that I set a range of 1024 in

问题 I want to create a chart application. I read that CorePlot can be used to do this, but I don't know where may I go to download the CorePlotSDK, and how or where to install it. I also read the procedure for installing the CorePlotSDK but I'm not clear about that. Please explain the downloading and installing procedure. Also explain the frameworks that I want to include and that purpose. 回答1: The project is hosted here. Follow the instructions there to download it, then maybe tell us any issues

问题 I am developing an iPad app , it has the option to show Scatter Plots user able to plot the points.I have used core plot library.i have to show 40 Scatter plots in a view controller. my application becomes not responding and get quits when i load 25 graphs. Is there any limitation (No.of Scatter plot counts) in Core plot for a View Controller to show? What is the optimal way to load Scatter Plots using Core Plot? 回答1: There's no hard limit on the number of graphs, but you will eventually run