I am trying to create a generic style for all rows in my data table. I have been looking around and there seems to be a function I can use named rownum.
I tired to create the style like this...
row["__rownum"] Less than 0
then colour = Red
But this is not right. Can someone tell me the right way to do this so I can apply the style to multiple cells in my table.
Also where can i find documentation on what sort of functions like this are available?
thanks
I know two ways how you can specify conditional styles in BIRT:
You can write an "onRender" eventHandler (either in Java or JavaScript) for your row. In JavaScript it could looks as follow:
if (row["__rownum"] % 2 == 0) {
this.getStyle().backgroundColor = "red";
} else {
this.getStyle().color = "red";
}
Or create a new BIRT style with a highlight-rule like follows:
row["__rownum"] % 2 equals to 0 then
Set Color or whatever or apply another style
Instead of creating a new style, that you will have to assign to target elements, you can also modify one of the predefined styles, if you find a one matching your targets.
Both EventHandler and Styles can be assigned to various element: Cells, Rows, Tables, Report...
Links you may find helpful:
https://www.eclipse.org/birt/phoenix/deploy/reportScripting.php
http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.birt.doc.isv%2Fmodel%2Fapi%2Forg%2Feclipse%2Fbirt%2Freport%2Fmodel%2Fapi%2FElementFactory.html
BIRT: Alternating row Color in a table group
Related
I am trying to do a collaboration diagram in umlet, but there isn't a palette element to do so. So I thought I'd create one. Easier said than done! I am able to define the class element of the diagram, but am unable to define the arrows that define the flow of the collaboration.
I've tried adding a drawline statement to the code window, but it is undefined in umlet custom element implementation.
//Modify the code below to define the element's behavior.
//
//Example: Change the line
// y += printCenter(textline,y);
//to
// y += 2*printCenter(textline,y);
//and observe the element preview.
int y=textHeight();
drawRectangle(0,0,100,35);
drawRectangle(0,150,100,35);
//drawline(10,35,10,115);
for(String textline : textlines) {
y += printCenter(textline,y);
}
The expected result should be two class elements and two arrows denoting the flow of the collaboration.
I've gotten this far, but I am unable to save it to the custom elements palette.
Welllll, my bad! It turns out that you can use the regular palette elements to construct the diagram and then save it to umlet's palettes directory.
I need to randomly select a single cell from a 5X5 table and change its background color. I would like to do this by choosing a random index location in the table.
I want to do this:
table > tr:nth-child(Random Number between 1 and 5) > td:nth-child(Random number between 1 and 5){
background-color: aqua;
}
I figured it out. Used this:
let selected = document.getElementById("table").rows[Math.floor(Math.random() * 5)].cells[Math.floor(Math.random() * 5)];
selected.id = "selected";
Ideally I would generate the random numbers, one for the and one for the in javascript and then pass the value to the css style sheet.
assign an id to the tds and make an array that contain the ids of these cells choose randomly from the array and change the style color of the cell matching the id
you might need to use javascript
PS if my answer helped you please upvote or choose it as answer if it was what you're looking for
I've got 2 pie charts with data like:
data: [
{diseaseType: 'Cancer', diseaseDetails: 'Lung cancer', quantity: 100},
{diseaseType: 'Diebetes', diseaseDetails: 'Unspecific', quantity: 650},
{diseaseType: 'Cancer', diseaseDetails: 'Breast cancer', quantity: 80}
]
i'm tying to get list of filters and able to remove them by user like (it's only controlled test code):
this.diseasePieChart.filters().splice(0, 1)
dc.renderAll()
it's updating first chart, but second (connected with first) not, it's stay like it was before remove filter.
Second chart i'm rendering like this:
self.diseasePieChart.on('filtered.monitor', function (chart) {
// create dimensions etc and render second chart
}
I also tried to do again crossfilter(data) after filter remove. When i'm calling dc.filterAll all filters are reset.
thanks for any help !
The correct entry points for changing filters are chart.filter() or chart.replaceFilter(), depending on whether you are trying to toggle individual items or change the entire array of filters at once.
As you found out, manipulating the array of filters inside the chart might affect the way the chart draws, but it won't convey the change to the crossfilter dimension and the other charts.
Note that as documented in the link above, the accepted type for the parameter for each of these functions is a little surprising:
The filter parameter can take one of these forms:
A single value: the value will be toggled (added if it is not present in the current filters, removed if it is present)
An array containing a single array of values ([[value,value,value]]): each value is toggled
When appropriate for the chart, a dc filter object such as
dc.filters.RangedFilter for the dc.coordinateGridMixin charts
dc.filters.TwoDimensionalFilter for the heat map
dc.filters.RangedTwoDimensionalFilter for the scatter plot
null: the filter will be reset using the resetFilterHandler
So if you want to get the array, remove an item, and then set it back, you could either:
var filters = chart.filters().slice(0); // copy the array of filters
filters.splice(0,1)
chart.replaceFilter([filters])
.redrawGroup();
or (using the toggle feature):
chart.filter(chart.filters()[0])
.redrawGroup();
Note that you usually want to redraw, not render, after changing a filter. This will allow the animated transitions to display, and is a little bit quicker.
Also, chart.redrawGroup is the same as dc.redrawAll() but it's a little safer in case you have more chart groups in the future.
How to create with Java a table with three rows as follows:
First row has one cell 100% entire table width
Second row has first from the left cell width 50mm, and second 20mm and third 30mm which in total is 100% of table width
Third row has first from the left cell width 30mm, and second 50mm and third 10mm which in total is 90% of table width
How would the code from the iText look like?
So you want to use iText to create a table that looks like this:
The PDF in the screen shot was created using the TableMeasurements example. The resulting PDF can also be downloaded for inspection: table_measurements.pdf
The first thing that jumps to the eye when looking at this screen shot is the fact that the table doesn't look "complete". This means that we will have to complete the table the way I already explained on SO yesterday (and many times before that): Why the 2nd row of table won't be written? (which was actually a duplicate of How to generate pdf if our column less than the declared table column and ItextSharp, number of Cells not dividable by the length of the row and Odd Numbered Cell Not Added To Pdf and PdfTable: last cell is not visible and ...)
In the comment section, I was asked:
How can I complete row with cells with no border?
I answered:
Use table.getDefaultCell().setBorder(Rectangle.NO_BORDER);
Note that PdfPCell.NO_BORDER also works as PdfPCell extends the Rectangle class.
In your case, we'd have something like this:
public void createPdf(String dest) throws IOException, DocumentException {
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(dest));
document.open();
PdfPTable table = new PdfPTable(10);
table.setTotalWidth(Utilities.millimetersToPoints(100));
table.setLockedWidth(true);
table.getDefaultCell().setBorder(PdfPCell.NO_BORDER);
table.addCell(getCell(10));
table.addCell(getCell(5));
table.addCell(getCell(3));
table.addCell(getCell(2));
table.addCell(getCell(3));
table.addCell(getCell(5));
table.addCell(getCell(1));
table.completeRow();
document.add(table);
document.close();
}
To make the example more realistic, I created a table with an exact width of 100 mm. For the width to be acknowledged, I lock the width. As already explained, I make sure that default cells have no border. After adding all the cells with the different widths (10 cm, 5 cm, 3 cm, 2 cm, 3 cm, 5 cm, 1 cm), I complete the row.
What does the getCell() method look like, you might wonder. This was already answered by Amedee in the comments (which for some reason you ignored):
private PdfPCell getCell(int cm) {
PdfPCell cell = new PdfPCell();
cell.setColspan(cm);
cell.setUseAscender(true);
cell.setUseDescender(true);
Paragraph p = new Paragraph(
String.format("%smm", 10 * cm),
new Font(Font.FontFamily.HELVETICA, 8));
p.setAlignment(Element.ALIGN_CENTER);
cell.addElement(p);
return cell;
}
We create a PdfPCell and we set the colspan to reflect the width in cm. I added some more fancy stuff. I didn't use any functionality in this example that isn't explained on the official web site or on StackOverflow.
For more rowspan and colspan examples, please take a look at the Colspan and rowspan section in the official documentation.
I have a selection of elements that I'm trying to filter down based on a particular style value (I want just the ones with opacity=1). I'm looking at the documentation for selection.filter along with selection.select and selection.selectAll as well but I'm confused about the correct usage with a function argument.
"select" indicates that it selects the first matching element (as expected) but then the example in the filter documentation shows it being used with a function to select the "odd" elements while maintaining the index.
"selectAll" indicates that you can return an array of elements, but that the function argument is invoked one-by-one in the usual way for each element in the original selection. I'm having difficulty imagining a use case for this.
I guess what I'm wondering is whether there are any tutorials or examples around that discuss the correct usage of these functions?
Thanks,
scott
If you want to reduce a selection to a subset of selected elements, use filter. If you want to select descendent elements, use select or selectAll.
Most often, filter is used to filter elements based on data or index. However, you can access the selected element as this within the filter function. Thus, if you have some elements selected, and you want to reduce that selection to only those elements with an opacity of 1, you can say:
var opaque = selection.filter(function() {
return this.style.opacity == 1;
});
To be safe, you might prefer to look at the computed style rather than the element's style properties. This way, if the opacity is inherited from a stylesheet, you'll get the correct value; otherwise, when a style is inherited this.style.opacity will be the empty string.
var opaque = selection.filter(function() {
return window.getComputedStyle(this, null).getPropertyValue("opacity") == 1;
});
Or equivalently, select the node and use selection.style:
var opaque = selection.filter(function() {
return d3.select(this).style("opacity") == 1;
});
You might find it easier if you filter by data or by class, instead of by computed style property. For example, if you set a class on your nodes, you can filter a selection by class instead:
var opaque = selection.filter(".opaque");