Bars fixed width

[verheyefrancesco]

Hi,
Is it possible to use a fixed column/subColumn width, in dp?
Example: when there is a lot of data, the user can scroll horizontally through the columns. The zoom is disabled.

Kind regards,
Francesco Verheye

[lecho]

Hi, you can't set column width in dp, you can modify viewport though. That will allow users to scroll horizontally through the columns. Columns are indexed from 0 to numCol - 1. Left edge of the chart has value -0.5f, right edge has value numCol - 0.5f. Try to modify left and right value of the current viewport:

chart.setColumnChartData(data);
Viewport v = new Viewport(chart.getMaximumViewport());
v.left = -0.5f;
v.right = 3.5f;
chart.setCurrentViewport(v);
chart.setZoomEnabled(false);

Above code will show only 4 columns(0, 1, 2, 3), to see rest of them you user will have to scroll horizontally.

[verheyefrancesco]

Thanks! It works great.

Another question, is it possible to draw only the bars which are visible instead of drawing them all? I have a lot of bars which makes is slow.

[fanturbo]

@lecho hi,when bars count is 2,I use your above code it will also show too much wide bar but not show 1/4 screen width per bar.What should I do when bars count is few?Thanks.