I have a chart who I pupulate like this:
hardSpecChart.DataSource = hardSpecModel;
hardSpecChart.Series.First().XValueMember = "TasksName";
hardSpecChart.Series.First().YValueMembers = "Time";
Problem is somethimes my Y values come with 0, so I don't want to show label of that items in chart, so to fix it I just do
hardSpecChart.DataSource = hardSpecModel.Where(x => x.Time > 0);
It works, but no as spected, I want to dissapear only labels from chart but not value at the top left of chart:
I want to show all labels at the top right of chart but I don't want to show at the graphic if they have value 0
For a Pie chart some extra rules apply:
Only the Y-values matter. (But if you add X-Values you can still refer to them in expressions, see below..)
You can have several Series but only Points from the 1st one show in the chart. Those from additional series do show in the Legend, though.
By default the Legend shows each Y-Value, not the Series name,
As usual the Legend can be influenced by properties LegendText and IsVisibleInLegend, both of which can be applied to either the whole Series or individual DataPoints.
DataPoints are shown as slices with a width (angle) proportional to their values compared to the sum of all absolute values; see the image below! This implies that points with a value of 0 do not show at all.
But: If you set IsValueShownAsLabel to true, zero-value labels still will show as 0.
To suppress those you can either
change that property for points that are 0 by looping over the points (ugly) or..
set a LabelFormat that suppresses the 0 for the whole series: someseries.LabelFormat = "#";
In the chart below I have set
chart1.Series[0].LabelFormat = "#";
chart1.Series[0].LegendText = "#INDEX. = #VAL";
There are many other keywords, which can also be combined..
Related
I am creating a chart in WinForms in C# and the X-axis is indexed.
I have 10000 points in the chart series
For some reason, the X-axis labels are labeled From 1 to 10001. Which means when I set the X-value (time) for any point, it does not get displayed for the 10001th label.
I tried setting the following parameters, none of which helped
chart1.ChartAreas[0].AxisX.MajorTickMark.IntervalOffset = -1;
chart1.ChartAreas[0].AxisX.LabelStyle.IntervalOffset = -1;
chart1.ChartAreas[0].AxisX.IsStartedFromZero = true;
chart1.ChartAreas[0].AxisX.IsLabelAutoFit = false;
None of this did anything to help, my chart labels are still reading from 1 to 10001, and no matter how much I zoom in (with added zoom controls) the labels still read on every interval ending with 1. Like 1001, 2001, 3001, .. etc.
How can I change this to read from 0 to 10000? And only show lines and labels on intervals ending with 0
Thanks
EDIT:
The minimum and the maximum were already set, in the screenshot you see below, all the X values are correctly indexed, but for some reason the chart display value 10001
And I do not wish to set the value to the Maximum to 10000 in this case, it will prevent the label from showing up but it will also prevent the ability to scroll the axis past the last measurement.
I'm using Visual Studio 2015, working with WinForms.
I link 2 images to make you guys easier to understand what I want to do:
Example 1
Example 2
In the example 1 we have 10 values with an automatic width, this is the size I want always for bars, but this is a dynamic chart so when there are less than 10 values it just fills to graph as you can see in example 2.
I want the same size always, the size of the example 1, have tried to specify using:
chrt_ventesArticles.Series[Conversion.Texto(f_cursor.Campo(1))]["PixelPointWidth"] = "100";
And tried too:
chrt_ventesArticles.Series[Conversion.Texto(f_cursor.Campo(1))]["PixelPointWidth"] = Conversion.Texto(Math.Round(chrt_ventesArticles.ChartAreas[0].InnerPlotPosition.Height, 0));
But it isn't working as it should, depending on the number of values it haves a different size.
Any ideas about how to do it?
To space the bars evenly over a fixed number of slots you need to set the Minimum and Maximum values to display on an Axis.
Here you have a Bar chart and want to display the bars in a 10 slots.
So you write maybe:
yourCharArea.AxisX.Minimum = 0;
yourCharArea.AxisX.Maximum = 10;
Now you get both:
Always the same width of the Bars, even while some DataPoints are missing.
But also still the automatic scaling when you resize the Chart itself.
The latter will not work when you set the with of the Bars in pixels..!
Before and after:
I have a line chart, which, after enough data points have been plotted to it, the data will exceed what is visible on screen (so that the chart is only showing the most recent data). When this occurs, I would like a scroll bar to be filled for the X axis, allowing the user to use the scroll bar to view such previous data.
How do I go about doing this? I don't want the user to be able to drag or zoom on the chart itself, just to solely use the scroll bar to navigate along the chart.
I've looked at this article: https://msdn.microsoft.com/en-us/library/dd456730.aspx but it doesn't help & the scrollbars do not appear.
Without seeing the relevant parts of your code it is hard to pin down your problems.
Here is one strange statement:
after enough data points have been plotted to it, the data will exceed
what is visible on screen (so that the chart is only showing the most recent data).
Now this can only happen after you have set the AxisX.Maximum because by default the chart control will squeeze the area more and more while you add points.
But when you have set a maximum of what can be shown, no scrollbar can work or even been shown. Sounds logical, right?
So either don't set it in the first place or clear it when the number of points exceeds what you want to show. To clear it use NaN :
chart1.ChartAreas[0].AxisX.Maximum = Double.NaN;
Or, of course, set it to the last point you want to be shown!
After looking at what you mustn't do let's see what you need to do to show the scrollbar:
First you enable it:
chart1.ChartAreas[0].AxisX.ScrollBar.Enabled = true;
Next you tell it to show only the scrolling handle and not the zoom-reset button:
chart1.ChartAreas[0].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll;
See MSDN on ScrollBarButtonStyles for the various things the scrollbar can show/do!
And to make sure the user can't zoom set this:
chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = false;
And finally set the current range to show:
chart1.ChartAreas[0].AxisX.ScaleView.Size = 111; // show 111 DataPoints
Now the scrollbar should show.
It is a good idea to study the AxisScaleView class as it has a couple of helpful properties..
Depending on the data type of your X-Values you may also need to set the ScaleView.MinSizeType to whatever suits your data:
chart1.ChartAreas[0].AxisX.ScaleView.MinSizeType = DateTimeIntervalType.Number;
I have a problem fitting my chart:
How can I adjust or manipulate the y-axis numbers to start from where I want it?
Secondly, is there a way (properties) which may help me display this graph friendly? As we can see all x-axis name aren't displayed and maybe a space b/w grey and blue bars?
Any help to how to display charts friendly is welcome
You can set the Interval of each Axis:
yourChart.ChartAreas[0].AxisY.Interval = 17;
And you can make it start at any Offset:
yourChart.ChartAreas[0].AxisY.IntervalOffset = 11;
As for the X-Axis Labels it is hard to tell without knowing your code..
..but basically the same options apply here too:
yourChart.ChartAreas[0].AxisX.Interval = 1;
To control the widths of the columns you set their custom property PixelPointWidth but adding a gap is not possible.
All solutions I found are hacks and the best one is to add a dummy Series between the real data series:
chart1.Series[0]["PixelPointWidth"] = "33";
chart1.Series["gap"]["PixelPointWidth"] = "33";
chart1.Series[2]["PixelPointWidth"] = "33";
Fill it with the same number of DataPoints with an X-Value of 0!
I am currently using Microsoft Chart Controls to generate a box plot chart. I have enabled the IsValueShownAsLabel property of the chart's series, but only the first y-value(lower whisker) value is being labeled. Is there a way to enable the labeling of all y-values in the chart?
Also, is there a way to get a different axis for each data point? The different data points of the chart are not related when it comes to value ranges, so many data points with small y-values are difficult to read on the chart. I have currently enabled scrolling as a workaround, but am not satisfied with the result. I would instead like to have a different y-axis for each data point, so that the y-values for each data point take up the full height of the chart, with the min and max whisker values serving as the y-axis minimum and maximum points. Is this possible?
To get different axis you will need to look into the properties under ScaleBreakStyle under AxisY
Set something like
Chart1.ChartAreas[0].AxisY.ScaleBreakStyle.Enabled = true;
Chart1.ChartAreas[0].AxisY.ScaleBreakStyle.BreakLineStyle = Charting.BreakLineStyle.Wave;
// set this to an even lower value if required
Chart1.ChartAreas[0].AxisY.ScaleBreakStyle.CollapsibleSpaceThreshold = 15;
Not sure on how to get multiple values but can you try setting those values specifically to the labels in these format #VALY1,#VALY2 depending on the number of Y values available.