C# Chart Control produces huge title for large heights - c#

I'm developing several bar charts using chart controls in C#, one of which holds a series of ~2300 data points. In order to be able to properly display custom labels for each data point, I expanded the height of the chart to be 10000. However, it's now producing quite a large sized header and footer for the chart, as seen below:
When I set the chart to resume having a more normal height of 500, though, the title size goes back to being more reasonable. How can I manually adjust the title size?
Here's my code for the chart properties:
Chart chart = new Chart();
chart.Width = 1000;
chart.Height = 10000;
chart.BackColor = Color.FromArgb(211, 223, 240);
chart.BorderlineDashStyle = ChartDashStyle.Solid;
chart.BackGradientStyle = GradientStyle.TopBottom;
chart.BorderlineWidth = 1;
chart.Palette = ChartColorPalette.Bright;
chart.BorderlineColor = Color.FromArgb(26, 59, 105);
chart.RenderType = RenderType.BinaryStreaming;
chart.BorderSkin.SkinStyle = BorderSkinStyle.Emboss;
chart.AntiAliasing = AntiAliasingStyles.All;
chart.TextAntiAliasingQuality = TextAntiAliasingQuality.Normal;
chart.Titles.Add("Hit Rate");
chart.IsSoftShadows = true;
chart.ChartAreas.Add("Left");
chart.ChartAreas["Left"].AxisX.Title = "Market Area";
chart.ChartAreas["Left"].AxisY.Title = "Hit Percentage";
UPDATE: I have added this to my code...
chart.ChartAreas["Left"].InnerPlotPosition.X = 5;
chart.ChartAreas["Left"].InnerPlotPosition.Y = 0f;
which has helped somewhat. In addition, I have found that it is not the size of the title in and of itself that is causing the problem. The height of the title is actually quite normal. Instead it is all the blank space allocated to the chart above the actual graphing area.

Let's try this :
chart.Titles[0].Position.Auto = false;
chart.Titles[0].Position.Width = 60; //change the size you want
auto = false means you manually calculate the location. I think by default the width of the title is 50% and 50% of the chart.
Ludo

Instead of setting the height and width of the chart manually why don't you leave it to set automatically according to the content and set the below:
chart.ChartAreas[0].AxisX.Interval = 1;
chart.ChartAreas[0].AxisY.Interval = 1;
(here i'm choosing chart area 0, change it according to your code)
As you add the above code do not set the height and width of the chart.
Let me know in case of issues

Related

Spline chart smooth corners

I am using Chart control from .NET framework in my project. I have added chart control to the form and configured as shown below.
// Add a new series.
chart1.Series.Add("1");
var series = chart1.Series[0];
series.ChartType = SeriesChartType.Spline;
// Hide the legend.
series.IsVisibleInLegend = false;
// configure x axis.
var cArea = chart1.ChartAreas[0];
cArea.AxisX.IntervalType = DateTimeIntervalType.Number;
cArea.AxisX.LabelStyle.Format = "00";
cArea.AxisY.LabelStyle.Format = "0.000";
cArea.AxisY.LabelStyle.IsEndLabelVisible = true;
cArea.AxisX.Minimum = 0;
cArea.AxisX.Maximum = 100;
cArea.AxisX.Interval = 20;
cArea.AxisY.Minimum = 0;
cArea.AxisY.Maximum = 100;
cArea.AxisX.Interval = 20;
Data point values are as below:
chart1.Series[0].Points.AddXY(0, 5);
chart1.Series[0].Points.AddXY(5, 10);
chart1.Series[0].Points.AddXY(10, 30);
chart1.Series[0].Points.AddXY(20, 100);
chart1.Series[0].Points.AddXY(30, 100);
chart1.Series[0].Points.AddXY(40, 90);
chart1.Series[0].Points.AddXY(50, 80);
For the above data points, series is not smooth. Upper edge is getting cut. Refer attached image.
How to make it smooth so that whole line is visible ?
It's not visible because of the smoothing, adapt the scale (using cArea.AxisX.Maximum = 150; for example) or remove the smoothing to make the whole curve visible.
As with the DrawCurves GDI+ method you can control the tension of the splines, i.e. how close they are to the points and their connecting lines and how much smoothing they create. Too much 'smoothing' creates the fantasy tops you see and also crazy whirls from even small bumps in the data..
Setting the tension it is done via the LineTension Custom attribute.
Lower it from the default of 0.8 to something smaller. Test to see what you prefer.
Here is an example for a Series S :
S.SetCustomProperty("LineTension", "0.4");
Note that you still should make the y-axis Maximum a little larger or else you may need to bring the tension down to 0, which will look like a line type..
Here are a few variations:

c# dynamically created label size not wide enough

When dynamically creating a label a part of it's text is missing. This is because the size of the label is not wide enough, it cuts of a part of the the actual string.
How do i make that simply stop? I dont want to nor do i remember setting a size to the label. Should it not just continue untill the string is empty?
Example: value = "Berserker's Iron Axe", it only displays "Berserker's Iron", because i have no size set it cust off a part of the string.
PictureBox finalResult_pBox = new PictureBox {
Name = "finalResult_pBox" + i,
Size = new Size(64, 64),
Padding = new Padding(0),
BorderStyle = BorderStyle.FixedSingle,
ImageLocation = spidyApi_idByName_result.results[i].img.ToString(),
};
MessageBox.Show(spidyApi_idByName_result.results[i].name.ToString());
Label finalResult_itemName_label = new Label{
Name = "finalResult_itemName_label" + i,
Text = spidyApi_idByName_result.results[i].name,
};
FlowLayoutPanel finalResult_panel = new FlowLayoutPanel{
FlowDirection = FlowDirection.TopDown,
BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle,
Name = "result_flowLayoutPanel" + i,
Size = new System.Drawing.Size(790, 64),
TabIndex = i,
};
finalResult_panel.Controls.Add(finalResult_pBox);
finalResult_panel.Controls.Add(finalResult_itemName_label);
result_flowLayoutPanel.Controls.Add(finalResult_panel);
Why is this happening and how do i fix this?
As long as you keep Label.AutoSize = true, which is the default it should size itself automatically.
You may want to do some tests to see the actual dimensions, like
setting a BorderStyle
or a BackColor
or inserting a space in the Text, so it gets a chance to go to a second line..
Of course you could measure the Text (with e.g. TextRenderer.MeasureText(text, Label.Font); but that will certainly not be necessary for the text simply to show.. It is useful for more demanding layout control, though.
So the first thing is to make sure that AutoSize is either true or that you measure and set the Size of the Label..

How to manually position ASP.Net Chart Legend?

Using the Chart controls built into ASP.Net, I'm trying to manually position the Title and the Legend so that they are directly next to each other horizontally just above the ChartArea. I've been able to manually position the Title using the following code:
chart.Titles["Title1"].Position.Auto = false;
chart.Titles["Title1"].Position.X = 10;
chart.Titles["Title1"].Position.Y = 5;
There's nothing to it, really. However, I'm attempting to position the Legend to the right of it with the following code, and the Legend doesn't even appear:
chart.Legends["Legend1"].Position.Auto = false;
chart.Legends["Legend1"].Position.X = 30;
chart.Legends["Legend1"].Position.Y = 5;
Any ideas what I'm doing wrong? This seems like it should be relatively simple. I've even tried various other coordinates, and I can't get the Legend to appear anywhere. It does appear if I use the built-in positioning such as below, but this positioning does not suit my purposes:
chart.Legends["Legend1"].Docking = Docking.Top;
chart.Legends["Legend1"].DockedToChartArea = "ChartArea1";
chart.Legends["Legend1"].IsDockedInsideChartArea = false;
chart.Legends["Legend1"].Alignment = StringAlignment.Far;
Try newing up an ElementPosition object, like this:
chart.Legends["Legend1"].Position.Auto = false;
chart.Legends["Legend1"].Position = new ElementPosition(30, 5, 100, 20);
Note: The constructor for ElementPosition takes 0 or 4 parameters (x, y, width, height).
I stumbled on this question for looking how to move legend at the bottom of a chart.
Answer for that is to use Docking property
Chart1.Legends["Legend1"].Docking = Docking.Bottom;
It may be helpful for someone in future, as this is the first link in google search.

GroupBox.AutoSize and GroupBox.Text wrapping

I have two problems with the GroupBox, they appears after setting GroupBox.AutoSizeMode = AutoSizeMode.GrowAndShrink and GroupBox.AutoSize = true.
GroupBox.Text width is not taken into account at all. Sizing will occurs to fit content only and then text will get wrapped if it doesn't fit. If it cannot fit - it is simply not displayed.
There is unnecessarily big gap between bottom of the GroupBox and Label inside.
Questions:
How to make GroupBox respecting its Text property when autosizing? And how to remove that gap?
For some reasons my previous question gets on hold. Should I delete it or what?
P.S.: if you are putting on hold or something, please comment what is exactly not-clear in what I am asking!
/*
Calculate the Text Width in pixels, then set the size for the GroupBox.
*/
groupBoxA.SuspendLayout();
SizeF stringSizeLabel;
using (System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(new Bitmap(1, 1)))
{
Font stringFont = new Font("Microsoft Sans Serif", 8.25F);
stringSizeLabel = graphics.MeasureString("SAMPLE TEXT", stringFont);
}
int iWidth = (int)(stringSizeLabel.Width * 1.35f); // Give a little extra width
int iHeight = 78; // This is a sample value
groupBoxA.Size = new System.Drawing.Size(iWidth, iHeight);
groupBoxA.MinimumSize = new System.Drawing.Size(iWidth, iHeight);
groupBoxA.ResumeLayout(false);
groupBoxA.PerformLayout();

Adding a scroll bar to MS Chart control C#

please understand that I know there are other threads concerning this issue, but my needs are different.
Basically before I seen people saying to implement a scroll bar with MSChart they use the
.Size = ...
or
.View = ...
But, this make a scroll bar automatically apprear, and this scroll bar contains a button that when clicked causes the bar to vanish, making the chart show all data, and no way of bringing back the scroll bar to the chart without restarting the app.
So I ask, please, Is there a way to incorportate a horizontal scroll bar on the X-axis of my Chart? I am needing on so that I can view my chart data on blocks of 100 second blocks.
i.e. 0 - 100, then click sroll bar will bring me to 100 - 200 block.
Thank you in advance guys!!!!! im coding in C# also
Here's an example of what you need:
(to try it, just create a form, add a mschart and call the following method)
private void FillChart()
{
int blockSize = 100;
// generates random data (i.e. 30 * blockSize random numbers)
Random rand = new Random();
var valuesArray = Enumerable.Range(0, blockSize * 30).Select(x => rand.Next(1, 10)).ToArray();
// clear the chart
chart1.Series.Clear();
// fill the chart
var series = chart1.Series.Add("My Series");
series.ChartType = SeriesChartType.Line;
series.XValueType = ChartValueType.Int32;
for (int i = 0; i < valuesArray.Length; i++)
series.Points.AddXY(i, valuesArray[i]);
var chartArea = chart1.ChartAreas[series.ChartArea];
// set view range to [0,max]
chartArea.AxisX.Minimum = 0;
chartArea.AxisX.Maximum = valuesArray.Length;
// enable autoscroll
chartArea.CursorX.AutoScroll = true;
// let's zoom to [0,blockSize] (e.g. [0,100])
chartArea.AxisX.ScaleView.Zoomable = true;
chartArea.AxisX.ScaleView.SizeType = DateTimeIntervalType.Number;
int position = 0;
int size = blockSize;
chartArea.AxisX.ScaleView.Zoom(position, size);
// disable zoom-reset button (only scrollbar's arrows are available)
chartArea.AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll;
// set scrollbar small change to blockSize (e.g. 100)
chartArea.AxisX.ScaleView.SmallScrollSize = blockSize;
}
Snapshot:
I would do it like this:
if (series1.Points.Count > 2 && chartArea1.AxisX.Maximum - chartArea1.AxisX.Minimum > chartArea1.AxisX.ScaleView.Size)
{
chartArea1.AxisX.ScrollBar.Enabled = true;
}
else
{
chartArea1.AxisX.ScrollBar.Enabled = false;
}
So when you added points more than your scaleview - scrollbar is appear
I worked out my own way for that. Hope it helps you:
Add your chart to a Panel.
Set the AutoScroll property of the panel to true with panelName.AutoScroll=true;
Size the chart properly in the panel.
You can now use the panel's scrollbar as if it were the chart's!
If data gets added continuously(e.g. with a timer or so), add this to the timer's tick event:
chartName.Size = new Size(width++, height++); where int width = chartName.Width; and int height = chartName.Height;

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