We are using TeeChart for .net (Version 4.1.2013.7302) in our forms application.
One of the charts in our product has Y Axis scrolling enabled. This makes some portion of chart visible at a given instance. To see other part of chart, user needs to use the scrollbar. A separate scrollbar is used instead of axis scrollbar, as there will be a adjoining grid control and; both chart & grid are expected to be scrolled using common scrollbar. Following is the sample form image depicting the scenario:
We are using TeeChart's export functionality to export this chart as an image. But since chart has scrolling enabled (i.e. minimum of chart is not visible by default); TeeChart is exporting only visible portion of Chart, and not the entire chart. Following is the image of chart exported:
Please suggest if there exists any way to export the entire chart as an image, and not just the visible portion of it?
Thanks in Advance.
Here's a fuller version of Yeray's code that fills out the exported image to the size of the full, mainly non-visible chart:
private void button11_Click(object sender, EventArgs e)
{
//get zoomed axis min maxes
double xtmpMin = tChart1.Axes.Bottom.Minimum;
double xtmpMax = tChart1.Axes.Bottom.Maximum;
double ytmpMin = tChart1.Axes.Left.Minimum;
double ytmpMax = tChart1.Axes.Left.Maximum;
//how many pixels are plotted for the axes' ranges
int yPixelRange = tChart1.Axes.Left.CalcPosValue(tChart1.Axes.Left.Minimum)-tChart1.Axes.Left.CalcPosValue(tChart1.Axes.Left.Maximum);
int xPixelRange = tChart1.Axes.Bottom.CalcPosValue(tChart1.Axes.Bottom.Maximum) - tChart1.Axes.Bottom.CalcPosValue(tChart1.Axes.Bottom.Minimum);
//get the chart header/footer space to re-apply to chart
int yMargins = tChart1.Bounds.Height - yPixelRange;
int xMargins = tChart1.Bounds.Width - xPixelRange;
//how many pixels are we getting per axis scale
double pixelsPerYAxisInt = yPixelRange / (ytmpMax - ytmpMin);
double pixelsPerXAxisInt = xPixelRange / (xtmpMax - xtmpMin);
//what increment are we at. Note. To get this back we may need to mod font size, min separation
double yInc = tChart1.Axes.Left.CalcIncrement;
double xInc = tChart1.Axes.Bottom.CalcIncrement;
//now reset auto axes before plotting full chart. Could use other criteria here
tChart1.Axes.Left.Automatic = true;
tChart1.Axes.Bottom.Automatic = true;
//Repaint full Chart (necessary for positioning calcs)
tChart1.Draw();
//set increments on full scales (note Chart will try to set them,
//but if it can't you have the last word with label separation, font size, etc)
tChart1.Axes.Left.Increment = yInc;
tChart1.Axes.Bottom.Increment = xInc;
//dimension chart for export
double fullYRange = tChart1.Axes.Left.Maximum - tChart1.Axes.Left.Minimum;
double fullXRange = tChart1.Axes.Bottom.Maximum - tChart1.Axes.Bottom.Minimum;
int fullYSize = (int)((pixelsPerYAxisInt * fullYRange) + yMargins);
int fullXSize = (int)((pixelsPerXAxisInt * fullXRange) + xMargins);
//setup and export image
tChart1.Export.Image.PNG.Width = fullXSize;
tChart1.Export.Image.PNG.Height = fullYSize;
tChart1.Export.Image.PNG.Save(#"c:\mypath\chart.png");
//reset screen chart to where it was
tChart1.Axes.Bottom.SetMinMax(xtmpMin, xtmpMax);
tChart1.Axes.Left.SetMinMax(ytmpMin, ytmpMax);
}
There are many ways to optimise that code, Axis does have an iRange that I haven't tried, and some of the steps can be brought together but I hope they are clear and useful and give you something of what you're looking for.
You can manually adjust your axis scale, export your chart and then restore your axis. Ie (if 0 - 4.25 in the bottom axis is the "entire chart"):
double tmpMin = tChart1.Axes.Bottom.Minimum;
double tmpMax = tChart1.Axes.Bottom.Maximum;
tChart1.Axes.Bottom.SetMinMax(0, 4.25);
tChart1.Export.Image.JPEG.Save(myFileName);
tChart1.Axes.Bottom.SetMinMax(tmpMin, tmpMax);
Related
I have such like a live chart realized with JFreeChart. The x-axis shows the time and there are several TimeSeriesCollections in the chart. If the a value is added to the TimeSeries the charts updates and shows the value only if it is not zoomed. Is there a possibility in the zoomed mode to show automatically new values (means to keep the zoom range and jump to the right).
Thanks
Oli
I found a possible solution:
this.chart.addChangeListener((ChartChangeEvent cce) -> {
if (scrollToNewest) {
Number max = DatasetUtilities.findMaximumDomainValue(this.plot.getDataset(0));
ValueAxis va = this.plot.getDomainAxis();
Range r = va.getRange();
double curUpperBound = r.getUpperBound();
double diff = max.doubleValue() - curUpperBound;
Range newR = new Range(r.getLowerBound() + diff, r.getUpperBound() + diff);
va.setRange(newR);
}
});
I placed the legend in the top left corner and there is an unnecessary gap between the chart and the legend.
How to reduce this?
There is considerable amount of space between pie chart and its border.
public void setPie() {
RingPlot plot = (RingPlot) this.chart.getPlot();
plot.setSectionPaint("", WHITE_COLOR);
plot.setCircular(true);
plot.setShadowPaint(null);
}
public void setLegend() {
LegendTitle legend = this.chart.getLegend();
legend.setVerticalAlignment(VerticalAlignment.TOP);
legend.setVisible(true);
legend.setPosition(RectangleEdge.LEFT);
Rectangle rect = new Rectangle(LEGEND_LENGTH, LEGEND_WIDTH);
RingPlot plot = (RingPlot) this.chart.getPlot();
plot.setLegendItemShape((Shape) rect);
}
You could try tweaking the margins around the LegendTitle. Something like:
chart.getLegend().setMargin(top, left, bottom, right);
EDIT: As suggested in the post in the comments, you could try to draw the legend manually at a given position:
//Print legend at X & Y location
Rectangle2D r2DD = new Rectangle2D.Double(119, 47, 120, 180);
LegendTitle legend = new LegendTitle(chart.getPlot());
legendTitle.draw(g2,r2DD);
But I'm not sure how to implement it, as you need access to the ChartPanel's Graphics2D. Perhaps by extending ChartPanel and overriding paintComponent(Graphics g) ?
I am using Jfreechart API 1.0.8 to generate the TimeSeriesChart(line chart).
when I am generating the chart, i am facing the problem of overlapping.
Here I am trying to display the rendered points(graph rendered points), by using XYLineAndShapeRenderer with StandardXYItemLabelGenerator.
When the points are displayed, the data-point is overlapping with the generated line chart (graph).
I am taking X-Axis as time, and y-Axis as revenue of organization, and i am using line chart here.
I'm displaying the points as discussed below.
By using "renderer.setBasePositiveItemLabelPosition" method, globally i am setting the position of graph points(data points) inside the xyplot rendered chart while considering the rendered "ItemLabelAnchor".
I am sending my sample code here:
chart = ChartFactory.createTimeSeriesChart("", "", "", newxyseries, false, true, false);
renderer = new XYLineAndShapeRenderer();
renderer = (XYLineAndShapeRenderer) chart.getXYPlot().getRenderer();
renderer.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator("{2}", monthDate, formatSymbol));
renderer.setBaseItemLabelsVisible(true);
renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE3, TextAnchor.TOP_RIGHT));
chart.getXYPlot().setRenderer(renderer);
But when I am generating the graph chart using Ms-office of Excel tools, there is no problem of overlapping of labels, the points are displayed in an effective manner without any overlapping.
JFreeChart doesn't do any overlap detection for item labels. It would be a great feature to have, but nobody has written the code to do it.
you have to refrain the labels to get overlap by define your own algo or logic because as the graph keep growing sooner the labels will start to get overlap.
the key is to make some or alternative labels transparent so that no overlapping occur
For example in the following P.O.C, only 35 labels will be drawn but the tick of graphs will remai same just the labels will reduce
CategoryAxis domainAxis = plot.getDomainAxis();
CategoryLabelPositions pos = domainAxis.getCategoryLabelPositions();
double size = plot.getCategories().size();
double occurence = Math.ceil(plot.getCategories().size() / 20);
double interval = Math.ceil(plot.getCategories().size() / 20);
for (int i = 1; i <= plot.getCategories().size(); i++) {
if (plot.getCategories().size() > 35) {
if(plot.getCategories().size()>35 && plot.getCategories().size()<250) {
if(i%8==0){
String cat_Name = (String) plot.getCategories().get(i-1);
} else{
String cat_Names = (String) plot.getCategories().get(i-1);
domainAxis.setTickLabelPaint(cat_Names, new Color(0,0,0,0));
}
}else if(plot.getCategories().size()>250){
[![enter image description here][1]][1]
if (i == occurence) {
String cat_Name = (String) plot.getCategories().get(i - 1);
if (occurence + interval >= size) {
// occurence=size;
} else {
occurence = occurence + interval;
}
} else {
String cat_Names = (String) plot.getCategories().get(i - 1);
domainAxis.setTickLabelPaint(cat_Names, new Color(0, 0, 0, 0));
}
}
}
Below line will make label transparent
domainAxis.setTickLabelPaint(cat_Names, new Color(0,0,0,0));
I have a canvas with a background image:
var bi = new BitmapImage(new Uri(imgLocFull));
var ib = new ImageBrush(bi) {Stretch = Stretch.UniformToFill};
MyCanvas.Background = ib;
I am overlaying various shapes on the image, and want the position of the shapes relative to the background image to be fixed.
If my application window is resized, the amount of the image that is cropped, horizontally and vertically, changes, and when my shapes are redrawn, they do not appear in the same position on the background image.
How can I determine how much of the image has been cropped (to apply an adjustment factor to the overlaid objects' positions?) Or is there a better way of fixing the location of a shape relative to the background image?
Here is my present drawing code:
var l = new Ellipse();
var scb = new SolidColorBrush();
scb.Color = Color.FromRgb(rCol, gCol, bCol);
l.Fill = scb;
l.StrokeThickness = 0;
l.Width = 3;
l.Height = 3;
Canvas.SetBottom(l, point.Y); // * clipping factor here?
Canvas.SetLeft(l, point.X); // * clipping factor here?
MyCanvas.Children.Add(l);
EDIT: Further Clarification
Here's a concrete example of what I am trying to achieve. My image is an aerial photograph, and I want to mark a particular geographical feature (with, say, an ellipse.)
When the window is resized, the ellipse doesn't stay on the feature, it stays relative to the left and top of the canvas.
I can get it closer to the right place by moving it using a factor (newx = newheight/oldheight * oldx) but this doesn't quite work because of the UniformToFill stretch mode, which sees some of the image clipped off the canvas.
The Top and Left of the Canvas are 'anchored', while the Bottom and Right move when resizing... try setting the Canvas.Top Attached Property instead, along with the Canvas.Left Attached Property as you are:
var l = new Ellipse();
var scb = new SolidColorBrush();
scb.Color = Color.FromRgb(rCol, gCol, bCol);
l.Fill = scb;
l.StrokeThickness = 0;
l.Width = 3;
l.Height = 3;
Canvas.SetTop(l, point.Y); // * clipping factor here?
Canvas.SetLeft(l, point.X); // * clipping factor here?
MyCanvas.Children.Add(l);
UPDATE >>>
You asked Or is there a better way of fixing the location of a shape relative to the background image?
I answered this question, so I don't understand why you would need to do anything else... your objects will not move when the screen in resized *if you only set the Grid.Top and Grid.Left properties.
Are there any working piemenu controls for WPF?
I've found this in my favorite , you can take a look at :
This
have a nice day.
This question is probably long dead, but just a note that the control Thomas M posted, while awesome, has a major issue: You need to mouse over and click on the actual item instead of the pie slice. This means that the pie slices are not completely adjacent and IMO defeats a lot of the clickability (Frits's law) advantages of the control. So while it looks like a pie menu, it really just positions everything radially.
I ended up doing this:
private static Path makeDeliciousKeyLimePieSlice(double innerRadius, double outerRadius,
double startAngle, double endAngle, Vector ofs)
{
Point p1 = new Point(Math.Cos(endAngle) * innerRadius, Math.Sin(endAngle) * innerRadius) + ofs;
Point p2 = new Point(Math.Cos(startAngle) * innerRadius, Math.Sin(startAngle) * innerRadius) + ofs;
Point p3 = new Point(Math.Cos(startAngle) * outerRadius, Math.Sin(startAngle) * outerRadius) + ofs;
Point p4 = new Point(Math.Cos(endAngle) * outerRadius, Math.Sin(endAngle) * outerRadius) + ofs;
PathFigure fig = new PathFigure(p1, new PathSegment[] {
new ArcSegment(p2, new Size(innerRadius, innerRadius), endAngle - startAngle, false, SweepDirection.Counterclockwise, true),
new LineSegment(p3, true),
new ArcSegment(p4, new Size(outerRadius, outerRadius), startAngle - endAngle, false, SweepDirection.Clockwise, true),
}, true).GetAsFrozen();
return new Path { Data = new PathGeometry(new[] { fig }).GetAsFrozen() };
}
This will create a "slice" of the pie. You can style this how you want if you want a true pie menu. Another option is to make it transparent (set the fill to Brushes.Transparent; it must have a fill to be hit-test visible), which looks good for radial context menus. Here's my WIP after about half an hour's work (I know the spacing sucks):
alt text http://public.blu.livefilestore.com/y1pdW5ibqWquKGosMSch9C5KmOTKkiZ35mAI7iFKKUKf3cm7TGSquXhO8hkkL9Ln6Z3tKn74u67C27Qb_AIWQxzhg/radial.png?psid=1
EDIT: ah; the cursor doesn't appear in the shot -- basically, if you use the path overlay, you can have the mouse outside the actual control but still have it highlighted.
This control needs a bit of work still but it's a great starting point and supports multiple levels of items. (ie: a hierarchy) Check it out here