Develop Reference

Change bar chart axis scale using Aspose.Cells for C#

I'm trying to set the axis scale for a bar chart using Aspose.Cells for C#. What I'm currently doing is essentially this:
var chart = worksheet.Charts.Add(ChartType.BarChart, 1, 1, 15, 15)
chart.NSeries.AddSeries("{.015,.03,.04}", true)
chart.NSeries.CategoryData = "{Apples,Oranges,Pears}"
chart.SeriesAxis.IsAutomaticMajorUnit = false;
chart.SeriesAxis.MajorUnit = .01;
However, when the spreadsheet renders the chart's major unit scale is automatically set to .1, so all the bars look disproportionately small. How can I change the scale of the series axis, so it has tick marks spaced apart by .01?

Please use the following code for your needs.
C#
//Set the major unit to 0.01
ch.ValueAxis.IsAutomaticMajorUnit = false;
ch.ValueAxis.MajorUnit = 0.01;
Here is the full sample code and the screenshot showing the output Excel file generated by the code for your reference.
C#
// Create empty workbook.
Workbook wb = new Workbook();
// Access first worksheet.
Worksheet worksheet = wb.Worksheets[0];
// Add Bar chart in first worksheet.
int idx = worksheet.Charts.Add(ChartType.Bar, 5, 2, 20, 10);
// Access Bar chart.
Chart ch = worksheet.Charts[0];
// Add two number series, true means they are vertical.
ch.NSeries.Add("{.015,.03,.04}", true);
// Set the category data to show on X-axis.
ch.NSeries.CategoryData = "{Apples,Oranges,Pears}";
// Set the name of first and second series.
ch.NSeries[0].Name = "Cricket";
//Set the major unit to 0.01
ch.ValueAxis.IsAutomaticMajorUnit = false;
ch.ValueAxis.MajorUnit = 0.01;
// Save the output in xlsx format.
wb.Save("outputBarChart.xlsx", SaveFormat.Xlsx);
Note: I am working as Developer Evangelist at Aspose

Align two charts-areas one on top of the other [duplicate]

I have one Chart and three ChartArea that are aligned in view, zoom, cursor:
this is my related previous post. All things works well except that the three ChartArea are not aligned at the beginning. Following an image of the problem:
I think it depends from the digit's number of Y values axis. From some research I try the following configuration:
// selezione e zoom
dlChart.ChartAreas[VOLTAGE_AREA].CursorX.Interval = 1;
dlChart.ChartAreas[VOLTAGE_AREA].CursorX.IsUserEnabled = true;
dlChart.ChartAreas[VOLTAGE_AREA].CursorX.IsUserSelectionEnabled = true;
// generale
dlChart.ChartAreas[VOLTAGE_AREA].AxisX.LabelStyle.Format = "dd/MM/yy - HH:mm:ss.fff";
dlChart.ChartAreas[VOLTAGE_AREA].AxisX.ScaleView.Zoomable = true;
dlChart.ChartAreas[VOLTAGE_AREA].AxisY.LabelStyle.Format = "D5";
In witch the last row:
dlChart.ChartAreas[VOLTAGE_AREA].AxisY.LabelStyle.Format = "D5";
should specifies always five digits. This mitigate in some way the problem but it doesn't desappers. Furthermore with this row the program starts to throws very lots exceptions of form below any time I scroll the graph:
Generate exception: 'System.FormatException' in mscorlib.dll
Does anyone knows the solution for this problem? Thanks in advance.

You may want to take control of the size of the InnerPlotPosition.
(But Baddack's solution is simpler and more flexible!)
Here is an example:
After setting up a Chart with three CharAreas, setting Minima and Maxima as well as adding one DataPoint to each we get this :
Your issue is showing clearly.
After setting the InnerPlotPosition to a fixed percentage it looks like this:
Here is how to set the InnerPlotPosition size:
ca1.InnerPlotPosition = new ElementPosition(10, 5, 80, 90);
ca2.InnerPlotPosition = new ElementPosition(10, 5, 80, 90);
ca3.InnerPlotPosition = new ElementPosition(10, 5, 80, 90);
Note that both ChartArea.Position and ChartArea.InnerPlotPosition are called 'Position' but really are areas of percentages referring to the respective containers!
So my example has a Left distance of 10%, a Top space of 5% and Width of 80% and Height of 90%. Which leaves 10% space at the Bottom and 5% at the Right. Note: All are referring to the ChartAreas not the ClientArea of the Chart! (Which are still at Auto, which maximizes the size.)
This was my initial setup:
ChartArea ca1 = chart.ChartAreas[0];
ChartArea ca2 = chart.ChartAreas[1];
ChartArea ca3 = chart.ChartAreas[2];
Series s1 = chart.Series[0];
Series s2 = chart.Series.Add("Series2");
Series s3 = chart.Series.Add("Series3");
s2.ChartArea = ca2.Name;
s3.ChartArea = ca3.Name;
s1.Points.AddXY(1, 7);
s2.Points.AddXY(1, 777);
s3.Points.AddXY(1, Math.PI);

Have you tried using the chart area alignment options? I would try something like:
//define inner plot position of the chart areas
dlChart.ChartAreas[0].InnerPlotPosition.Auto = true;
dlChart.ChartAreas[1].InnerPlotPosition.Auto = true;
dlChart.ChartAreas[2].InnerPlotPosition.Auto = true;
//set our second chart area's alignments to match our first chart area
dlChart.ChartAreas[1].AlignmentOrientation = AreaAlignmentOrientations.Vertical;
dlChart.ChartAreas[1].AlignmentStyle = AreaAlignmentStyles.All;
dlChart.ChartAreas[1].AlignWithChartArea = dlChart.ChartAreas[0].Name;
//set our third chart area's alignments to match our first chart area
dlChart.ChartAreas[2].AlignmentOrientation = AreaAlignmentOrientations.Vertical;
dlChart.ChartAreas[2].AlignmentStyle = AreaAlignmentStyles.All;
dlChart.ChartAreas[2].AlignWithChartArea = dlChart.ChartAreas[0].Name;

How to separate two series by displaying Line between them in Column chart C#?

I have 2 series (2016 and 2017) in column chart and all datapoints values are showing fine. but I need to differentiate two series values by showing thick border line between two series.
because , now it seems to combining the 2017 values with 2016 series values since no separator line not there.
FYI.
EDIT:
After used vertical line in my column chart the output as like below,
But i need only one Line that should present between the two series .
how do i remove other lines.
Finally , Got the expected Output.
Thanks in advance.

var series = Mainchart.Series[0]; //series object
var chartArea = Mainchart.ChartAreas[series.ChartArea];
chartArea.AxisX.StripLines.Add(new StripLine
{
BorderDashStyle = ChartDashStyle.Solid,
BorderColor = Color.Black,
Interval = 0, // to show only one vertical line
IntervalOffset = 1.5, // for showing Vertical line between 2 series
IntervalType = DateTimeIntervalType.Years // for me years
});

You may use StripLine:
StripLine limit_lower_strip = new StripLine();
limit_lower_strip.Interval = 0;
limit_lower_strip.IntervalOffset = v1_lower;
limit_lower_strip.StripWidth = 0.0;
limit_lower_strip.BorderColor = Color.FromArgb(100, Color.Red);
limit_lower_strip.BorderDashStyle = ChartDashStyle.Solid;
limit_lower_strip.BorderWidth = 5;
chart1.ChartAreas[0].AxisX.StripLines.Add(limit_lower_strip);

visual studio c# chart with only one axis

I'm trying to create in c# in Visual studio a nice way to show the minimum, maximum and actual value of a "variable" (Variable is a class). I was trying to use the charts to do that but I have two problems.
1) It shows in 2D and I only need 1 dimension.
2) I can't write tags on the values, in this case to show which is the minimum, the maximum and the current value.
Is there a SeriesChartType that does that?
I would appreciate ideas. Thanks!

It is not so much the chart type but the various styling options you need to play with.
Here is an example using ChartType.Point:
// no legend:
chart.Legends.Clear();
// a couple of short references:
ChartArea ca = chart.ChartAreas[0];
Series S1 = chart.Series[0];
// no y-axis:
ca.AxisY.Enabled = AxisEnabled.False;
ca.AxisY.Minimum = 0;
ca.AxisY.Maximum = 1;
// use your own values:
ca.AxisX.Minimum = 0;
ca.AxisX.Maximum = 100;
// style the ticks, use your own values:
ca.AxisX.MajorTickMark.Size = 7;
ca.AxisX.MajorTickMark.Interval = 10;
ca.AxisX.MinorTickMark.Enabled = true;
ca.AxisX.MinorTickMark.Size = 3;
ca.AxisX.MinorTickMark.Interval = 2;
// I turn the axis labels off.
ca.AxisX.LabelStyle.Enabled = false;
// If you want to show them pick a reasonable Interval!
ca.AxisX.Interval = 1;
// no gridlines
ca.AxisY.MajorGrid.Enabled = false;
ca.AxisX.MajorGrid.Enabled = false;
// the most logical type
// note that you can change colors, sizes, shaps and markerstyles..
S1.ChartType = SeriesChartType.Point;
// display x-value above; make sure you have enough room!
S1.Label = "#VALX";
// a few test data:
S1.Points.AddXY(1, 0.1);
S1.Points.AddXY(11, 0.1);
S1.Points.AddXY(17, 0.1);
S1.Points.AddXY(81, 0.1);
Note that you can play with the Series.SmartLabelStyle to display values when they are too dense!
I add the DataPoints at an y-value of 0.1. You can change it to move the points up or down a little..

Custom X/Y grid line in MSChart control

I have a C# windows form with a simple 2D line chart that I want to add custom X or Y axis markers to, and draw a custom grid line (in a highlighted color, dotted line for example). I have looked at the customLabels property, but this seems to override the default grid, which I still want to display. This is to illustrate something like a threshold or a cutoff. How can I do this with the MSChart control?
Many thanks

Could you achieve what you want with striplines?
In the ms chart samples (get it here http://archive.msdn.microsoft.com/mschart), inside the "Using Custom Labels" section, they use striplines on the Y axis which are quite effective at highlighting ranges of values. They also do not affect the grid ... I checked that by changing the sample code a little so I could easily move the boundaries of the striplines around (see below).
double low_med = 17; // was 30
double med_hi = 92; // was 70
// Set Y axis custom labels
axisY.CustomLabels.Add(0, low_med, "Low");
axisY.CustomLabels.Add(low_med, med_hi, "Medium");
axisY.CustomLabels.Add(med_hi, 100, "High");
StripLine stripLow = new StripLine();
stripLow.IntervalOffset = 0;
stripLow.StripWidth = low_med;
stripLow.BackColor = Color.FromArgb(64, Color.Green);
StripLine stripMed = new StripLine();
stripMed.IntervalOffset = low_med;
stripMed.StripWidth = med_hi - low_med;
stripMed.BackColor = Color.FromArgb(64, Color.Orange);
StripLine stripHigh = new StripLine();
stripHigh.IntervalOffset = med_hi;
stripHigh.StripWidth = 100 - med_hi;
stripHigh.BackColor = Color.FromArgb(64, Color.Red);
axisY.StripLines.Add(stripLow);
axisY.StripLines.Add(stripMed);
axisY.StripLines.Add(stripHigh);