big snap shot

[dimohamdy]

How can i get big snap shot for all data i show in chart ?

[liuxuan30]

what you mean? a snapshot of the chart view? Use UIKit or CoreGraphics APIs can do so.
Charts has a API for this as well:
getChartImage is the func to save chart view as image. You can take a look at that too.

    /// Saves the current chart state with the given name to the given path on
    /// the sdcard leaving the path empty "" will put the saved file directly on
    /// the SD card chart is saved as a PNG image, example:
    /// saveToPath("myfilename", "foldername1/foldername2")
    ///
    /// - parameter to: path to the image to save
    /// - parameter format: the format to save
    /// - parameter compressionQuality: compression quality for lossless formats (JPEG)
    ///
    /// - returns: `true` if the image was saved successfully
    open func save(to path: String, format: ImageFormat, compressionQuality: Double) -> Bool
    {
		guard let image = getChartImage(transparent: format != .jpeg)
            else { return false }
        
        var imageData: Data!
        switch (format)
        {
        case .png:
            imageData = NSUIImagePNGRepresentation(image)
            break
            
        case .jpeg:
            imageData = NSUIImageJPEGRepresentation(image, CGFloat(compressionQuality))
            break
        }
        
        do
        {
            try imageData.write(to: URL(fileURLWithPath: path), options: .atomic)
        }
        catch
        {
            return false
        }
        
		return true
    }

[dimohamdy]

I want to get image that show the total chart

[liuxuan30]

Then the code I posted can do that.

getChartImage is the func to save chart view as image. You can take a look at that too.

[dimohamdy]

i know but it take only the part of chart that shown in view not total chart

[liuxuan30]

would you post a screenshot and your code to explain? I checked the code, it's supposed to render your chart view as image.