Using office open XML SDK I have drawn a scatter chart with smooth line but wondering how to change the line style for the series to show dashed line?
Finally I figured it out using OPenXML Productivity tool. You have to change the PresetDash property to System.Dash.
private void MakeSeriesDashedLine(ScatterChartSeries scs)
{
C.ChartShapeProperties chartShapeProperties1 = new C.ChartShapeProperties();
A.Outline outline1 = new A.Outline();
A.PresetDash presetDash1 = new A.PresetDash() { Val = A.PresetLineDashValues.SystemDash };
outline1.Append(presetDash1);
chartShapeProperties1.Append(outline1);
scs.Append(chartShapeProperties1);
}
Related
I follow the sample and add pictures as watermark like the following:
private void addWaterMark4AllSheets() {
final BufferedImage image = FontImage.createWatermarkImage();
// Export to byte stream B
final ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
ImageIO.write(image, "png", os);
} catch (final IOException e) {
e.printStackTrace();
}
final XSSFWorkbook wb = (XSSFWorkbook) workBook;
final int pictureIdx = wb.addPicture(os.toByteArray(), Workbook.PICTURE_TYPE_PNG);
final POIXMLDocumentPart poixmlDocumentPart = wb.getAllPictures().get(pictureIdx);
// ((XSSFSheet )(schreiben.getSheet()).
for (int i = 0; i < workBook.getNumberOfSheets(); i++) {// Get each Sheet
final XSSFSheet sheet = wb.getSheetAt(i);
final PackagePartName ppn = poixmlDocumentPart.getPackagePart().getPartName();
final String relType = XSSFRelation.IMAGES.getRelation();
// add relation from sheet to the picture data
final PackageRelationship pr = sheet.getPackagePart().addRelationship(ppn, TargetMode.INTERNAL, relType,
null);
// set background picture to sheet
sheet.getCTWorksheet().addNewPicture().setId(pr.getId());
}
}
In general the approach works quite fine. A picture is added into the Excel. But the appearance is different.
In Excel: the image is displayed in the background during the editing (of the sheets). But it is NOT displayed when I print the sheet.
In LibreOffice (7.1): the image is NOT displayed during the editing (of the sheet) - but is printed.
Is there a chance to fix it for working in both Spreadsheets?
There is nothing what apache poi could change as this behavior is by design in the different spreadsheet softwares.
Your linked code example does not creating watermarks. Watermark functionality is not available in Microsoft Excel. Instead it adds background pictures to sheets.
Microsoft itself states: You cannot print a background graphic for a Excel worksheet. So using Microsoft Excel the sheets background graphics only are visible in Excel GUI but not in prints.
In LibreOffice those background graphics are called watermarks but Libreoffice states in Defining Graphics or Colors in the Background of Pages (Watermark):
In spreadsheets this background appears only in the print behind the
cells not formatted elsewhere.
So using Libreoffice the sheets background graphics are visible in prints only.
So what you had observed is by design.
In Add or remove a sheet background Microsoft describes methods to mimic a watermark in Excel. The usage of a picture in a header or footer to mimic a watermark using apache poi is described in apache POI adding watermark in Excel workbook. But this also means a print watermark. So the watermark is visible in print preview and print only. It is not visible in sheet's GUI. And the option to add picture in a header or footer to mimic a watermark is Excel only. LibreOffice does not provide that feature.
Conclusion:
There is not a possibility to have a functionality similar to a watermark which works in Excel and LibreOffice the same way.
I'm not sure how to flip the axes of my chart. Below is the code I'm using.
Please see also the picture on how it looks right now. Instead of drawing the data vertically I'd like to show it horizontally. It suppose to look like a stock chart because that is what it actually is. I'm using YQL to get the historical data of the symbol as Json format.
I also see the data is scooped in the whole screen. I'd like to see the last month for example and just allow the user to swipe to the right for more or just to zoom out.
I'd appreciate some help.
float vals=0;
String[] resultStrs = new String[StockHistoryArray.length()];
for (int i = 0; i < StockHistoryArray.length(); i++) {
JSONObject chartDataObj = StockHistoryArray.getJSONObject(i);
yVals.add(new Entry(vals,(int) Float.parseFloat(chartDataObj.getString("Adj_Close")),i+1));
xVals.add(i, String.valueOf(vals));
vals++;
}
LineDataSet setting = new LineDataSet(yVals, "Stock Chart");
ArrayList<ILineDataSet> dataSets = new
ArrayList<ILineDataSet>();
dataSets.add(setting);
LineData data = new LineData(xVals, dataSets);
lineChart.setData(data);
Legend l = lineChart.getLegend();
l.setForm(Legend.LegendForm.LINE);
l.setTextColor(Color.WHITE);
XAxis x1 = lineChart.getXAxis();
x1.setTextColor(Color.WHITE);
x1.setDrawGridLines(false);
x1.setAvoidFirstLastClipping(true);
YAxis y1 = lineChart.getAxisLeft();
y1.setTextColor(Color.WHITE);
y1.setAxisMaxValue(120f);
y1.setDrawGridLines(true);
return null;
Here is the screen shot after I run this code. It is one year history.
screen capture
You are doing wrong in the following line.
yVals.add(new Entry(vals,(int) Float.parseFloat(chartDataObj.getString("Adj_Close")),i+1));
Use like this to draw the chart correctly
yVals.add(new Entry(entryVal,entryXIndex);
If your value in chartDataObj.getString("Adj_Close")
then you need to add like this
yVals.add(new Entry(Float.parseFloat(chartDataObj.getString("Adj_Close")), i);
I have plotted a scatterChart in an Excel file using OpenXml. The points are joined by line. How can I remove the line? I tried doing this:
ScatterStyle scatterStyle = new ScatterStyle() { Val = ScatterStyleValues.Marker };
scatterchart.AppendChild<ScatterStyle>(scatterStyle);
But Excel repairs the file and changes the value back to ScatterStyleValues.LineMarker from ScatterStyleValues.Marker.
Please help me. Thankyou
It turns out that you have to add a shape property to your series, and add an outline where fill = nofill.
enter code here
//ChartShapeProperty of series
ChartShapeProperties SeriesShapeProperty = new DocumentFormat.OpenXml.Drawing.Charts.ChartShapeProperties();
DocumentFormat.OpenXml.Drawing.Outline outline = new DocumentFormat.OpenXml.Drawing.Outline(new DocumentFormat.OpenXml.Drawing.NoFill()) { Width = 28575 };
SeriesShapeProperty.Append(outline);
scatterChartSeries.Append(SeriesShapeProperty);
I have a JavaFX app which contains a line chart. I want users to be able to select the color of each series in the chart. Since the selection is dynamic I can't use static CSS to set the colors. I also have other controls that I need to set to the same color as the associated series. It's possible to set the line color of a series dynamically using code like this:
series.getNode().setStyle("-fx-stroke: " + color + ";");
That works well and I can use the user-specified color on the associated controls.
My problem is that I also need to set the color of the symbols for each series to the same color. I can't find any way to do that dynamically. All of the tutorials, documentation, and posts that I've read on the topic point to the static CSS approach.
Most charting widgets make this sort of thing very easy to do, but I've found no clues here or on the Oracle forums. Any guidance would be greatly appreciated.
-- Update --
I've found no way to do this other than to enumerate every data point in every series, grab the associated symbol node and set the style individually. Not what I was hoping for. In the process I realized that the default Node allocated for a symbol is a StackPane. I didn't need that flexibility so I replaced it with a Rectangle. This made rendering faster.
I'm late to the game, but maybe someone can use my solution. What worked for me, was iterating through every item in the data series and setting the CSS style for each one.
for (int index = 0; index < series.getData().size(); index++) {
XYChart.Data dataPoint = series.getData().get(index);
Node lineSymbol = dataPoint.getNode().lookup(".chart-line-symbol");
lineSymbol.setStyle("-fx-background-color: #00ff00, #000000; -fx-background-insets: 0, 2;\n" +
" -fx-background-radius: 3px;\n" +
" -fx-padding: 3px;");
}
I was stuck with a similar problem. I don't know upfront which data is going to be added to the graph, so I can't make use of a fixed stylesheet.
I came up with this solution. This code listens for new series added to graph. For every added series, it will create a new listener for data added to the series.
This listener will look up which series this is, the 0th, 1st, etc and then find the two nodes for the coloring of the line and of the legend/symbol.
As soon as it has set both, it can unsubscribe.
Problem can be that the legend/symbol node is not available yet when you receive the callback on the first added datapoint.
I'm aware it's very convoluted and I'm open to hear improvements.
At least it will give you the option to dynamically set the color to anything you want.
final LineChart<Number, Number> chart = new LineChart<>(new NumberAxis(), new NumberAxis());
final ObservableList<Series<Number, Number>> series = chart.getData();
series.addListener(new ListChangeListener<Series<Number, Number>>() {
#Override
public void onChanged(Change<? extends Series<Number, Number>> change) {
ObservableList<? extends Series<Number, Number>> list = change.getList();
for (final Series<Number, Number> serie : list) {
serie.getData().addListener(new ListChangeListener<Data<Number, Number>>() {
#Override
public void onChanged(Change<? extends Data<Number, Number>> ignore) {
int index = series.indexOf(serie);
Set<Node> nodes = chart.lookupAll(".series" + index);
boolean isStyleSet = false;
for (Node n : nodes) {
if (StringUtils.isEmpty(n.getStyle())) {
String css = "-fx-stroke: %s; -fx-background-color: %s, white; ";
String color = //assign dynamically here, for instance based on the name of the series
n.setStyle(String.format(css, color, color));
isStyleSet = true;
}
}
if (!isStyleSet & nodes.size() > 1) {
serie.getData().removeListener(this);
}
}
});
}
}
});
I had a problem which might be slightly different (possibly more complex); I needed to style some nodes of a series one color, others within the same series another color (I also needed to be able to change the allocation of color dynamically). I am working in JavaFx 2.2; I have css-styling, but of course that does not help here. I could not find my issue addressed anywhere; this was the closest I've found.
I just want to say that I could not get "series.getNode().setStyle("-fx-stroke: " + color + ";")" to work. However, using "-fx-background" instead does work. I hope this helps someone.
I'm creating a dynamic VSD from a hierarchical set of data that represents a flowchart. I don't want/need to fuddle with absolute positioning of these elements - the automatic layout options will work just fine.
The problem is I can't figure out how to perform this command via code. In the UI (Visio 2010), the commands are on the ribbon here: Design (tab) -> Layout (group) -> Re-Layout (SplitButton).
Any of these will do. Looking through the Visio SDK documentation and Googling for a couple days have turned up nothing of very much use.
Any ideas? (using C#, but VB/VBA would do)
The Page.Layout() method itself is not enough.
In the WBSTreeView.sln sample project (VB.Net) I found how to accomplish this, but couldn't post my answer until 8 hours later :-x
The other layout types are possible by looking through the enums used below.
Compact -> DownRight just ended up being better for most of the flows we're creating.
Translated to C#:
// auto-layout, Compact Tree -> Down then Right
var layoutCell = this._page.PageSheet.get_CellsSRC(
(short)VisSectionIndices.visSectionObject,
(short)VisRowIndices.visRowPageLayout,
(short)VisCellIndices.visPLOPlaceStyle);
layoutCell.set_Result(
VisUnitCodes.visPageUnits,
(short)VisCellVals.visPLOPlaceCompactDownRight);
layoutCell = this._page.PageSheet.get_CellsSRC(
(short)VisSectionIndices.visSectionObject,
(short)VisRowIndices.visRowPageLayout,
(short)VisCellIndices.visPLORouteStyle);
layoutCell.set_Result(
VisUnitCodes.visPageUnits,
(short)VisCellVals.visLORouteFlowchartNS);
//// to change page orientation
//layoutCell = this._page.PageSheet.get_CellsSRC(
// (short)VisSectionIndices.visSectionObject,
// (short)VisRowIndices.visRowPrintProperties,
// (short)VisCellIndices.visPrintPropertiesPageOrientation);
//layoutCell.set_Result(
// VisUnitCodes.visPageUnits,
// (short)VisCellVals.visPPOLandscape);
// curved connector lines
layoutCell = this._page.PageSheet.get_CellsSRC(
(short)VisSectionIndices.visSectionObject,
(short)VisRowIndices.visRowPageLayout,
(short)VisCellIndices.visPLOLineRouteExt);
layoutCell.set_Result(
VisUnitCodes.visPageUnits,
(short)VisCellVals.visLORouteExtNURBS);
// perform the layout
this._page.Layout();
// optionally resize the page to fit the space taken by its shapes
this._page.ResizeToFitContents();
//
Changing Connector Line Colors
If you're unfamiliar with how formulas for colors work, this might also be very frustrating. By default you can give an int as a string to get pre-defined colors, but this isn't very helpful because there isn't an easy way to figure out what each of those colors are. (There is a Page.Colors collection, but you have to inspect each of their RGB values and figure out the color from them.)
Instead, you can use your own RGB values for the formula.
private void SetConnectorLineColor(Shape connector, string colorFormula)
{
var cell = connector.get_Cells("LineColor");
cell.Formula = colorFormula;
}
internal static class AnswerColorFormula
{
public static string Green = "RGB(0,200,0)";
public static string Orange = "RGB(255,100,0)";
public static string Yellow = "RGB(255,200,0)";
public static string Red = "RGB(255,5,5)";
}
Call the Layout method on the Page object. If there are shapes selected on this page then this method will only operate on the current selection. You may want to call DeselectAll on the ActiveWindow first.