Thank you very much, this solved my problem On Sat, Jun 20, 2020 at 12:45 PM SHUANG SU <sushuang0...@gmail.com> wrote:
> Parvez Shah, > > There is another example might be related to this issue: > https://echarts.apache.org/examples/en/editor.html?c=line-pen > > This example use the API > ```js > var pointInGrid = myChart.convertFromPixel('grid', pointInPixel); > ``` > to calculate the "value extent" of axes from pixels. > > Currently, it might be the only way to get the "value extent" of an axis. > That is, > (1) Firstly, we should know the the pixel of the four corner of a > "grid(cartesian)", > for example: [10,10] [500, 10] [500, 700] [10, 700] > (2) Use the API > https://echarts.apache.org/en/api.html#echartsInstance.convertFromPixel > ```js > var valueInLeftTop = myChart.convertFromPixel('grid', [10,10]); > var valueInRightTop = myChart.convertFromPixel('grid', [500, 10]); > var valueInRightBottom = myChart.convertFromPixel('grid', [500, 700]); > var valueInLeftBottom = myChart.convertFromPixel('grid', [10, 700]); > ``` > > Does that satisfy your requirement? > > > Thanks, > ------------------------------ > Su Shuang (100pah) > ------------------------------ > > > > On Thu, 18 Jun 2020 at 22:34, Parvez Shah <parvez.s...@mytradewall.com> > wrote: > > > Finding maximum and minimum x, y-axis value of visible chart area. > > use case: on click of button need to draw a line on the chart. I am > > following this example for the same > > https://echarts.apache.org/examples/en/editor.html?c=line-draggable > > > > setting data for the series as > > var data = [[10, 40], [10, 10]]; > > but as my chart is zoomable how do i get maximum and minimum x, y-axis > > value of visible chart area, so that i can compute coordinate for the > line > > on run time > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: dev-unsubscr...@echarts.apache.org > > For additional commands, e-mail: dev-h...@echarts.apache.org > > > > >
