I have created a chart in the image below and I need to insert in addition to the existing labels, the end labels on the extreme left and right of the x-axis. There are numerous datapoints and therefore I cannot set the interval to 1 for the labels as they'll clutter the axis. I have already tried setting the property
chartHistory.ChartAreas[0].AxisX.LabelStyle.IsEndLabelVisible = true;
but it doesn't seem to work. How can I achieve this?
You may try:
chartHistory.ChartAreas[0].AxisX.IsMarginVisible = true;
chartHistory.ChartAreas[0].AxisX.LabelStyle.IsEndLabelVisible = true;
Or probably you will have to add the labels yourself,
you can either use DataPoint.AxisLabel:
chartHistory.Series[0].Points[0].AxisLabel = "5/4/2010";
or more flexibly:
chartHistory.Series[0].Points[0].AxisLabel =
System.DateTime.FromOADate(chartHistory.Series[0].Points[0].XValue).ToShortDateString();
(and the same for the last point in series)
or you can add a custom label to the AxisX control:
chartHistory.ChartAreas[0].AxisX.CustomLabels.Add(0, 20, "5/4/2010");
See also this answer and this answer.
I have a windows forms application that displays a chart compose by two chart areas, one for price/dates and the second displays volume/price, both should get the same amount of datapoints to draw in each chart area, the issue I have at the moment is that both charts are not aligned vertically so they are not very clear for the user, I added the following properties to volumen chart area:
volumeChartArea.AlignWithChartArea = CHART_AREA_PRICES;
volumeChartArea.AlignmentStyle = AreaAlignmentStyles.All;
volumeChartArea.AlignmentOrientation = AreaAlignmentOrientations.Vertical;
But they still don't look correct, what could it be the solution to fix this issue?
Many thanks in advance.
something like this maybe?
if (this.chrtMain.ChartAreas.Count > 0)
{
ca.AlignmentOrientation = AreaAlignmentOrientations.Vertical;
ca.AlignWithChartArea = this.chrtMain.ChartAreas[0].Name;
}
All chart areas will be aligned as they are added this way.
How does one set the alignment of text within a chart legend object? I've tried using:
myChartName.Legends["mySeriesName"].Alignment = stringAlignment.Near
With no effect. I've also tried to create custom legend items, again resulting in no effect. Text is ALWAYS centered (along with the series marker) in the legend "box". The only text I have been able to align is the title, but I don't need titles in my application.
My research to date says the legend object is basically a table with (by default) two cells. If that is the case there should be a way to access those cells and manipulate them as table cells. So, what gives? Why can't I access the text alignment properties of the legend object? Clearly, there is something I'm missing, but for the life of me I can't seem to figure this out. Quite frustrating.
Problem solved. The CustomItem approach wasn't working either, so I tried using the LegendCellColumn Class.
I changed the LegendStyle from Column to Row, then added two CellColumns, one for the series symbol and one for the legend text. Set the alignment, margins, and column widths (that turned out to be the trick), and voila; a legend that looks like I want. Here's the code for anyone with a similar issue.
chartSel.Legends[ySeries.Name].CellColumns.Add(new LegendCellColumn("", LegendCellColumnType.SeriesSymbol, ""));
chartSel.Legends[ySeries.Name].CellColumns[0].Alignment = ContentAlignment.TopLeft;
chartSel.Legends[ySeries.Name].CellColumns[0].Margins = new System.Windows.Forms.DataVisualization.Charting.Margins(0, 0, 1, 1);
chartSel.Legends[ySeries.Name].CellColumns[0].MinimumWidth = 250;
chartSel.Legends[ySeries.Name].CellColumns[0].MaximumWidth = 250;
chartSel.Legends[ySeries.Name].CellColumns.Add(new LegendCellColumn("", LegendCellColumnType.Text, ySeries.Name));
chartSel.Legends[ySeries.Name].CellColumns[1].Alignment = ContentAlignment.MiddleLeft;
chartSel.Legends[ySeries.Name].CellColumns[1].Margins = new System.Windows.Forms.DataVisualization.Charting.Margins(0, 0, 1, 1);
chartSel.Legends[ySeries.Name].CellColumns[1].MinimumWidth = 1500;
chartSel.Legends[ySeries.Name].CellColumns[1].MaximumWidth = 1500;
It's probably not the most efficient way to do it, but it works. Technically, the legend symbol and text are still centered in the object, but because I'm forcing the widths of the two columns it has the appearance of being left-justified.
Hopefully, this may help another newbie like me avoid days of consternation.
My understanding is that Legend alignment relates to the Docking property, not really how the text is aligned within the legend. So setting Alignment to Near means positioning the legend box near the Docking direction.
It is quite hard to explain this textually. The MS Chart Samples have a subsection named Chart features -> Legends -> Style and Auto Positioning which will help you play with those two properties and understand how they are meant to work.
For inner legend alignment, you may need to use Legend.CustomItems and define LegendCell individually.
chart.Legends["Default"].CustomItems.Clear();
chart.Legends["Default"].CustomItems.Add(new LegendItem("LegendItem", Color.Red, ""));
chart.Legends["Default"].CustomItems[0].Cells.Add(new LegendCell(LegendCellType.Text, "My text", ContentAlignment.MiddleLeft));
This is described inside the Chart features -> Legends -> Legend Cells section of the samples.
While continuing to try to figure this out I stumbled on this tidbit of info from the following MSDN library page:
http://msdn.microsoft.com/en-us/library/dd456711(v=vs.100).aspx
"NOTE: You cannot adjust the individual legend items and cells in the Chart.Legends collection. To adjust them, use custom legend items."
So, back to the CustomItem route. I've got this code gleaned from several sources (including you, Dominique, thanks):
chartSel.Legends.Add(ySeries.Name);
chartSel.Series[ySeries.Name].IsVisibleInLegend = false;
chartSel.Legends[ySeries.Name].CustomItems.Clear();
LegendItem li = new LegendItem();
li.ImageStyle = LegendImageStyle.Line;
li.Cells.Add(LegendCellType.SeriesSymbol, "", ContentAlignment.TopLeft);
li.Cells[0].BackColor = Color.CornflowerBlue; //color is only to see the cell bounds
li.Cells.Add(LegendCellType.Text, ySeries.Name, ContentAlignment.TopLeft);
li.Cells[1].BackColor = Color.Aquamarine; //color is only to see the cell bounds
chartSel.Legends[ySeries.Name].CustomItems.Add(li);
From what I can find it should work, but it doesn't. It results in a legend object with two cells; the first is empty and the second has left-justified text. I tried to post an image of it, but the system says I'm not yet worthy.
Why there is no line for the series symbol is also a mystery, but that's another problem to solve. The text justification issue is my main concern at the moment. It looks like the text within the cells is left-justified as desired, but the cells themselves are centered in the legend object; not what I wanted. I want those cells to be left-justified in the object too, so the first cell is against the left edge of the legend object.
Ideas?
When the Microsoft chart control is zoomed in, the values of the labels and grid lines often looks like 38.2, 39.2, 40.2, 41.2 ... rather than 38,39,40,41. I tried to set the interval offset to correct this by using the code shown below without success.
myChart.ChartAreas[0].AxisX.MinorGrid.IntervalOffset = myChart.ChartAreas[0].AxisY.ScaleView.ViewMinimum % 1;
myChart.ChartAreas[0].AxisX.IntervalOffset = myChart.ChartAreas[0].AxisY.ScaleView.ViewMinimum % 1;
What is the proper way to get the major and minor grid-lines and labels to be drawn starting at a specific value?
Your problems might be caused by margins being added. Make sure you set
myChart.ChartArea[0].AxisX.IsMarginVisible = false;
Hi I am using Ms chart control in winforms application for displaying values according to dates
I need to change the x-axis label values(Dates) direction horizantal to vertical
I have searched so many properties but i did not find any solution for this.
Any one help me on this problem
Many Thanks ....
As I understand your question - you are asking how to rotate the chart label to display vertically.
You can rotate the x-axis label as follows:
chart1.ChartAreas[0].AxisX.LabelStyle.Angle = -90;
This assumes you have associated your series with the first chart area, which is the default without modification when using the Winforms designer.
The following images shows how the chart would look before the code above is applied, the second image shows how it appears after the code is applied.
Let me know if this is not what you are trying to do and I will post an updated answer.
Before rotation
After Rotation
Edit: Another answer added after my initial post mentions in certain situations it may be important to set chartArea1.AxisX.IsLabelAutoFit = false;
If you have not already done so, get the chart samples from microsoft:
http://archive.msdn.microsoft.com/mschart
Then check the section on Labels
Chart Features > Labels
To answer your question directly, set the angle in LabelStyle, and don't forget to disable autofit
chartArea1.AxisX.IsLabelAutoFit = false;
chartArea1.AxisX.LabelStyle.Angle = 90;