What's the recommended way to use JFreeChart's FastScatterPlot from within scala-chart?

Would it be possible to publish an 2.9.2 artifact?

Thanks

Hi,
It is possible to use events on chart like as the components from swing?

It would be nice to have a factory for JFreeChart's time series charts - apparently there isn't one today.

What would be the easiest way to create a density plot using scala-chart?

In jfree-chart I found this:
http://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/renderer/xy/XYBlockRenderer.html

code as below:

import scalax.chart.api._

val chart = BarChart(data)

will throw:

java.lang.NoClassDefFoundError: org/jfree/chart/axis/CategoryAxis3D
  at scalax.chart.api$.BarChart$lzycompute$1(api.scala:7)
  at scalax.chart.api$.BarChart(api.scala:7)
  ... 36 elided
Caused by: java.lang.ClassNotFoundException: org.jfree.chart.axis.CategoryAxis3D
  at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
  ... 38 more

sbt as :
libraryDependencies += "com.github.wookietreiber" %% "scala-chart" % "0.5.1"

After adding only

 libraryDependencies += "com.github.wookietreiber" %% "scala-chart" % "latest.integration"

I get this compilation error:

Error:scalac: missing or invalid dependency detected while loading class file 'PDFExporter.class'.
Could not access term itextpdf in package com,
because it (or its dependencies) are missing. Check your build definition for  
missing or conflicting dependencies. (Re-run with `-Ylog-classpath` to see the problematic classpath.)
A full rebuild may help if 'PDFExporter.class' was compiled against an incompatible version of com.

It works after adding also the itext dependency, but in the documentation is seems that this latter one is not needed

I'm trying to change the theme of my chart so that it gets a transparent background, but nothing seems to apply.

I've tried:

val transparent = new Color(0xFF, 0xFF, 0xFF, 0)
implicit val theme: StandardChartTheme =
    org.jfree.chart.StandardChartTheme.createLegacyTheme().asInstanceOf[StandardChartTheme]
theme.setPlotBackgroundPaint(transparent)
theme.setChartBackgroundPaint(transparent)
theme.setLegendBackgroundPaint(transparent)

Am I doing something wrong?

Hi! Can you update this project to support Scala 2.13, updating its downstream dependencies if needed? Thank you!

Hi! Would it be possible to publish the current version as 0.3.0 release, and continue with 0.4.0-SNAPSHOT after that? I have a few libraries depending on 0.3.0-SNAPSHOT, and it would be great if I could publish stable versions of those, too. Thanks.

Hi, when I follow the example on in README.md, the window that pops up is extremely small. It is so small that I didn't even find the window the first time that it opened up! I must manually drag the edges to be able to view the window contents. Is there a way to supply a dim argument to chart.show the same that that can be done with saveAsPDF?

Thanks!

Hi @wookietreiber,
It is possible to get data from selected area?
I found some example in java http://stackoverflow.com/questions/16105277/jfreechart-select-an-area-without-zooming
Cheers,
Jan

Does scala-chart provide a wrapper for JFreeChart TimeSeries?

Hi,
I do not see the option settings for XYChart log axis. There is a possibility in this release or require a longer writing in Java?

i'm using the scala-chart jar 2.10_-0.2.2.jar in Eclipse with Scala-ide plugin.
The compiler is telling me:
_

scala-chart_2.10-0.2.2.jar of Sample Scala 2 build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler

_

Is there an update available?? How can I work around this?

Is there any class/object I can use to create chart with points but without lines?

I manage to do it by:

val chart = XYLineChart(series)
val renderer = new XYLineAndShapeRenderer(false, true)
chart.plot.setRenderer(renderer)

But is there any better way?

And how to manipulate size of point's shape?

Is it possible to display 3d points on a plot?

http://www.jfree.org/jfreesvg/

JFreeSVG is a fast, light-weight, vector graphics library for the Java(tm) platform that makes it easy to generate graphical output in SVG format directly from Java code. The library contains:
SVGGraphics2D - generate Scalable Vector Graphics (SVG) output via standard Java2D API calls;
CanvasGraphics2D - generate Javascript code that draws to an HTML5 Canvas object;

Is it possible to plot 2 horizontal lines (y=cte1, y=cte2) and a series value in the same chart?

I'm more familiar with R; and have been struggling to figure out how to make a simple histogram/category chart.

Lets say I have a sequence of probabilities, trials, represented as a Seq[Int] in Scala, or numeric vector in R.

I've tried val chart = CategoryChart(trials, "trials", legend = false), but can't seem to get any results.

In R, I would use hist(trials, xlab="x-axis", ylab="y-axis")

When charts are shown in high-density displays such as Retina displays in MacBooks, the fonts and the lines look blurry.

There seems to be a simple fix for that by disabling the ChartPanel buffer, but that will surely affect drawing performance (I don't know to what extent, though). Nonetheless, scala-chart should either support a better solution to draw charts on Retina displays or expose the useBuffer flag to let users decide if they want to trade quality by performance.

Hi @wookietreiber,
It is possible to customize the x-axis values? I am generating a XYLineChart with values of a whole week hours (180 values). Instead of showing 10-10 intervals I would like to show hours and ideally also days, something like:

1,2,3,...23,24,1,2,3...,23,24,....
Monday Tuesday...

For X values, these types do not work:

• java.lang.Long
• java.math.BigInteger

// fail to compile:
val d1 = for (i <- 1 to 5) yield (new java.lang.Long(i), i.toDouble)
val d2 = for (i <- 1 to 5) yield (new java.lang.Long(i), i)
val d3 = for (i <- 1 to 5) yield (new java.math.BigInteger(i.toString), i.toDouble)

These work:

// compiles:
 val data1 = for (i <- 1 to 5) yield (new java.lang.Integer(i), i)
 val data2 = for (i <- 1 to 5) yield (new java.lang.Double(i), i)
 val data3 = for (i <- 1 to 5) yield (new java.lang.Float(i), i)
 val data4 = for (i <- 1 to 5) yield (i.toDouble,i.toDouble)
 val data5 = for (i <- 1 to 5) yield (new BigInt(new java.math.BigInteger(i.toString)), i.toDouble)
 val data6 = for (i <- 1 to 5) yield (i.toLong, i) ; XYLineChart(data).show()
 val data7 = for (i <- 1 to 5) yield (new java.util.Date(new java.lang.Long(i)), i)

The CategoryLabelGenerator seems to throw an exception when used. This is reproducible with the code below:

  import scalax.chart.api._
  import org.jfree.data.category.DefaultCategoryDataset
  def barChart(multiseries: (String, Seq[(String,Double)])*): CategoryChart = {
    val ds = new DefaultCategoryDataset
    for {
      (setLbl, series) <- multiseries
      (seriesLbl, v) <- series
    } ds.addValue(v, seriesLbl, setLbl)
    val c = BarChart(ds)
    c.labelGenerator = CategoryLabelGenerator.Default
    c
  }
  barChart("Set 1" -> List("A" -> 3d, "B" -> 1d), "Set 2" -> List("A" -> 2d, "B" -> 2d))

This throws the following exception:

org.jfree.data.UnknownKeyException: Unrecognised columnKey: 0
    at org.jfree.data.DefaultKeyedValues2D.getValue(DefaultKeyedValues2D.java:274)
    at org.jfree.data.category.DefaultCategoryDataset.getValue(DefaultCategoryDataset.java:217)
    at scalax.chart.module.CategoryLabelGenerators$CategoryLabelGenerator$$anonfun$Default$1.apply(CategoryLabelGenerators.scala:76)
    at scalax.chart.module.CategoryLabelGenerators$CategoryLabelGenerator$$anonfun$Default$1.apply(CategoryLabelGenerators.scala:76)
    at scalax.chart.module.CategoryLabelGenerators$CategoryLabelGenerator$$anon$1.generateLabel(CategoryLabelGenerators.scala:70)

Looking at the source, the problem is actually in fromPeer() and toPeer(). CategoryLabelGenerator expects the row and category labels, but in toPeer() it uses the series and category ids instead; since all of these are Comparables it compiles regardless.

    final def fromPeer(jfree: JCategoryLabelGenerator): CategoryLabelGenerator =
      CategoryLabelGenerator { (dataset, series, category) =>
        // XXX: Uses series and category as keys to look up indices:
        val row = dataset.getRowIndex(series)
        val col = dataset.getColumnIndex(category)
        jfree.generateLabel(dataset, row, col)
      }

    final def toPeer(generator: CategoryLabelGenerator): JCategoryLabelGenerator = new JCategoryLabelGenerator {
      override final def generateColumnLabel(dataset: CategoryDataset, category: Int): String = ""

      // XXX: This is passing in ints for series and category, but as can be seen above
      //      in fromPeer, it uses them as the keys to get the index (even though we 
      //      already have it).
      override final def generateLabel(dataset: CategoryDataset, series: Int, category: Int): String =
        generator(dataset, series, category) 

      override final def generateRowLabel(dataset: CategoryDataset, series: Int): String = ""
    }

I have a (1 line) fix that converts the indices back to keys before calling the CategoryLabelGenerator: fbab9bf