I would like to dynamically change the draw of a line from solid, dotted or dashed.
How to achieve this with graphview flutter ?
Related
Is it possible to draw a line similar to the example below and color it based on the previous value?
So to have the color red when the line is moving down and green when it goes up.
Can this be done with line type? Or does it need to be drawn with markLine or something else?
Any help is much appreciated!
https://echarts.apache.org/examples/en/editor.html?c=dynamic-data2
I don't think it is possible with the line chart, as the whole line uses the same color for all points. I suggest you use a scatter type chart where each point can have a different color. By setting symbol size to a small value and drawing values close together you can emulate visual line.
Here is an example based on the regression sample from echarts site:
Echarts version : 4.8
I'm using scatter and heatmap series on the same map.
The problem is that on the right border the heatmap are cut until the last point.
How can I display the full heatmap tiles ? what am I missing here ?
Thanks
It is difficult to determine the problem from your picture, it would be easier with the configuration code, but I will try.
Try to add to the chart config the grid option. With grid you will can control padding of the visual chart part against outside space.
https://echarts.apache.org/en/option.html#grid
You need to change left, right, bottom and top options to move the edges.
I am using the CustomPainter to draw a line chart where the line(stroke) needs to be of a different color and the fill color should be a different shade of it.
I could draw the chart but both with same colors.
However, I need the colors to be different.
How can I do this with a CustomPainter?
Also, I want to know how to have a single path painted with different colors instead of a single color if possible.
Thanks for your help!
I personally draw the stroke with "drawLine" calls and the fill with "drawPath".
You can define 2 different paints and use paint1 with "drawLine" and paint2 with "drawPath".
I am drawing a line using CGContext and color has transparency of 0.7 , Now i want to draw another line with another color with same transparency on that previous line . But i get the second line color as a solid color without any transparency in the part where this both two lines intersect. For first line i am using blend effect clear to draw a transparent line and for the second line i am using blend effect color. Please tell me how to draw these two lines separately so that the second line drawn can have its own separate color .
The default blending mode (kCGBlendModeNormal) should provide the behavior you want in both cases.
How to draw Pie chart like below by using coreplot???
You'll need to use two pie charts to draw this—one for the inner ring and another one for the outer ring. Look at the Donut Chart plot in the Plot Gallery example app.
The pieRadius sets the radius of the outside of the ring and the pieInnerRadius property sets the inner radius. Use a negative labelOffset to put the labels inside the plot. Insert a newline ('\n') character between the word and the number to make the two-line labels for the inner plot. Set the textAlignment of the label text style to CPTTextAlignmentCenter to center align the multi-line labels.
You can use the default color scheme for the pie slices, but it only has 10 colors. If you want more or different slice colors, implement the -sliceFillForPieChart:recordIndex: datasource method and return the desired fill (which can be a color, gradient, or image) for each slice.
http://www.jaysonjc.com/programming/pie-chart-drawing-in-iphone-using-core-plot-library.html
I hope It Will Help ful to you