How to remove particular renderer for multipleseries renderer in scatter graph using achartengine lib? - achartengine

How to remove particular renderer for multipleseries renderer in scatter graph(in combined graph) using achartengine lib

The XYMultipleSeriesRenderer class extends DefaultRenderer, which has a method removeSeriesRenderer(SimpleSeriesRenderer renderer).

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Is there a way to get the coordinates of a Segment that I draw on the HighCharts stockChart?

This is the chart I'm currently using: https://www.highcharts.com/demo/stock/stock-tools-gui
I wanted to know if its possible to get the coordinates of the line segment (in code) drawn using their inbuilt line tool.
Shapes added by using stock tools are stored as annotations and you can refer to them by:
chart.annotations[x].points;
Live demo: https://jsfiddle.net/BlackLabel/yf2c8oqk/
API Reference: https://api.highcharts.com/highcharts/annotations

Change bokeh python hovertool tooltip layout

Is there a way to change the layout of the hovertool's tooltips? I mean, bokeh shows the standard square with some information, close to the point and linked by a small triangle.. Is there a way to change this triangle and put a line that connects the tooltip to the point but at some distance (like an annotation), but dynamic as a hovertool tooltip?
Thanks for all!!
standard tooltip
New tooltip type
It is possible but it requires quite some work. You have to create a custom subclass of Tooltip that renders the tooltip the way you want and a custom subclass of HoverTool that uses that tooltip class.

iOS Charts graphing a line from a function

I am using the iOS-charts library in (Swift 3) to plot my data into a scatter chart. I can do this part easily but now I am trying to get a non-linear best fit line to display too. Does the charts library have any easy functions for finding a best fit line, and if not how do I create a line from a function if a have to derive the best fit line function myself. I know how to create a line graph from data points but do not know if charts allows you to make one from a function. An example of what I'm trying to do is above. Any help is appreciated thanks.
Link to iOS-charts
http://www.appcoda.com/ios-charts-api-tutorial/

Draw Candlestick Charts in swift

I am a beginner to iOS.
I need to draw Candlestick Chart.
Is any framework available to draw this?
Can anyone one guide me to implement candlestick chart?
You can use Charts library for your requirement and here are some related library for CandleStick Chart
scichart : https://www.scichart.com/ios-candlestick-chart-demo/
Core Plot : http://code.google.com/p/core-plot/
Shinobi Charts (PAID) : https://www.shinobicontrols.com/shinobicharts
But Among all Charts is best lib for showing your data with charts and danielgindi managed this lib nicely.
Hope This info will helps you!

Extending coreplot to draw Gauge Chart and Perot Charts?

Is there a way to extend coreplot library to create Gauge chart and Perot Chart? Could someone please point me in the right direction.Or is there any other library available to achieve the same.
Subclass CPTPlot and create a custom plot types. Look at the existing plots to see the required structure. The most important parts are the data loading and drawing methods.

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