Show empty Chart when there are no data

[cepages]

Hi I'm working with LineChartData and I would like to show the axis even when there are not data in the chart, in my case:

po listOfLineChart
<__NSArrayM 0x7faf5dcb9340>(
ChartDataSet, label: Weight, 0 entries:
)

I don't want to show the message: You need to provide data for the chart. No chart data available

Thanks

[dxclancy]

I am not one of the authors of the library, but in the demo, I see that there is this setting:
_chartView.noDataTextDescription = @"You need to provide data for the chart.";
So it seems like you could turn off this text by setting it to @"";

Perhaps if you detect the chart is empty, you could set an empty value to get the chart to draw.

[cepages]

The problem is I don't want to paint 0's, because currently I'm adding
empty values, if I add 0's the graph will paint them.

Maybe I taking the fact of empty values wrong, what do you mean exactly
with empty values?

Thanks
On 25 Apr 2016 11:27 p.m., "dxclancy" [email protected] wrote:

I am not one of the authors of the library, but in the demo, I see that
there is this setting:
_chartView.noDataTextDescription = @"You need to provide data for the
chart.";
So it seems like you could turn off this text by setting it to @"";

Perhaps if you detect the chart is empty, you could set an empty value to
get the chart to draw.

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#975 (comment)

[dxclancy]

I actually meant adding just one value of 0 (and configure all other things so that it won't draw things.)

However, I just tried this:
If you replace this line in the Demo LineChart1ViewContoller:
LineChartData *data = [[LineChartData alloc] initWithXVals:xVals dataSets:dataSets];
with
LineChartData *data = [[LineChartData alloc] init];
it seems to behave as you want.

[liuxuan30]

If you don't have any data, the axis range will be displayed as 0-1, which may be meanless. Currently, there is a check to make sure you have data before calculation. If you really want the axis displayed, you have to delete those checks, starting from data setter and drawRect

[cepages]

Hi @liuxuan30 when you mean there is a check could you point me what exactly should I change?

I was checking here but I'm not really sure.

@dxclancy I tried with the demo and to change that you commented, as you said it's showing the chart. I tried in my one but shows the message instead of the char:

I will try to know what is different. Thanks

[cepages]

Thanks both, in the end I could check the new version of the library is not showing the message. I wasn't using the new version due to a (problem with translations in XCode 7.3)