"The function saveTable(Table, String) does not exist"

KesterR

line 206 in http://piratepad.net/2qUISlwOK7

error "The function saveTable(Table, String) does not exist"

saveTable() definitely exists in Processing Reference guide, and I think I've used the arguments right, so why am I getting this error?

Thanks!

Chrisir

do you try this in a .js or processing context?

It won't run in the browser I guess...

processing version is = ?

Greetings, Chrisir ;-)

KesterR

I'm just trying to run it in Processing editor.

Processing2.1.1.

Even just saveTable(); throws an error saying the function does not exist.

KesterR

Oh, in Processing and in Java mode, I haven't fiddled with the mode at all, ever.

GoToLoop

Table is a new Processing 2's class. JS Mode is Processing 1! [..]

Chrisir

I can't spot it, sry...

KesterR

It seems like http://processing.org/reference/saveTable_.html might be out of date?

http://processing.org/reference/javadoc/core/processing/core/PApplet.html#saveTable(processing.data.Table, java.lang.String)

Looks like some slightly different syntax here - http://stackoverflow.com/questions/18955163/how-to-append-results-in-processing

void finish() {
    // build table of meanGroupSizePerType
    Table meanGroupSizePerTypeTable;
    meanGroupSizePerTypeTable = new Table();
    meanGroupSizePerTypeTable.addColumn("Normal", Table.DOUBLE);
    meanGroupSizePerTypeTable.addColumn("Parasitized", Table.DOUBLE);
    for (int i = 0; i < meanGroupSizePerType[0].size(); i++) {
      TableRow row = meanGroupSizePerTypeTable.addRow();
      row.setDouble("Normal", meangroupsize[0]);
    }
    for (int i = 0; i < meanGroupSizePerType[1].size(); i++) {
      TableRow row = meanGroupSizePerTypeTable.addRow();
      row.setDouble("Normal", meangroupsize[1]);
    }
    File meanGroupSizePerTypeFile = new File(sketchPath("") + "data/meanGroupSizePerTypeTable.csv");  
    saveTable(meanGroupSizePerTypeTable, "data/meanGroupSizePerTypeTable.csv");
...
} 

meanGroupSizePerType is an array of integer arraylists, which has already been filled by this stage in the program. finish() is a new method to export my summary measures to csv file, because the dataset is too big to transpose from horizontal to columns in Excel.

I'm definitely using Processing2.1.1 in standard Java mode.

Thanks!

PhiLho

saveTable() definitively exists, and if I make a sketch like:

Table t = new Table();
saveTable(t, "foo.csv");

I don't have a compilation error.

The code you show is partial, so we lack some context. The World class seems to be defined outside of a PApplet context: you use System.out.println() instead of println(), for example. Is it in the .java file?

On the other hand, render() uses classical PApplet functions, but perhaps the compiler haven't spotted them yet...

KesterR

Hi Phil,

thanks, here's the file - http://piratepad.net/2qUISlwOK7 (it's part of a sketch, with other files, but I think everything potentially relevant is in that one).

Line 213 is where the saveTable() function call is.

World class is declared like this:

// Global variables
World world;
ControlP5 controlP5;

// Setup the Processing Canvas
void setup() {
  size(1400, 950);
  world = new World();
  controlUI();
  smooth();
}

I'm a beginner (biologist not a CS student) recently fallen in the deep end, so I only slightly understand what you're talking about with PApplets. I don't think I've done anything unusual or clever that would clash with PApplet definitions in Processing, at least not deliberately!

Thanks!

GoToLoop

Processing's IDE has a very useful auto-formatting feature invoked by CTRL+T! <:-P
If you had used it, you woulda noticed that method finish() is lacking a closing curly brace }! [-(

KesterR

Hiya, yes I use Ctrl+T very frequently, but there was a lot more code in between this snipet and the closing curly brace, which was commented out at the time. There was a closing curly brace tho, otherwise I get a "unexpected token void" error - have done several times, but that wasn't the source of the saveTable() function does not exist error.

A friend who's a brilliant coder helped me over the phone, and we wrote an equivalent function using PrintWriter. In case anyone else gets stuck on the same thing and finds this later, here it is, hope it saves you days of frustration struggling with saveTable()!

    PrintWriter pw1 = null;
    try {
      File meanGroupSizePerTypeCSV = new File("meanGroupSizePerTypeCSV.csv");
      FileWriter fw1 = new FileWriter(meanGroupSizePerTypeCSV, true);
      pw1 = new PrintWriter(fw1);
      for (int i = 0; i < meanGroupSizePerType[0].size(); ++i) { // why [0]? 
        for (int j = 0; j < meanGroupSizePerType.length; ++j) {
          pw1.print(meanGroupSizePerType[j].get(i) + ",");
        }
        pw1.println("");
      }
    } 
    catch (IOException e) {
      e.printStackTrace();
    } 
    finally {
      if (pw1 != null) {
        pw1.flush();  // Writes the remaining data to the file
        pw1.close();
      }
    }

I called pw1 because I have a pw2 etc.

General point I found really useful - if you want to transpose the orientation of an arraylist[] or [][] in order to get your data over timesteps in rows in the console window or in an exported file, then

the outer loop will always give you rows

the inner loop will always give you columns

So, if you've got an array of arraylists, like my meanGroupSizePerType Arraylist[], and you want to print it out to the Console or export to a file in an orientation that you don't have to transpose later in Excel (because Excel will only transpose about 13,000 columns into rows, in theory, and in practice it seems to crash whenever I tried to transpose more than 10,000), then you'll want to

loop over the elements in each arraylist first, e.g. meanGroupSizePerType[0].size(), starting at [0], then loop over the array, e.g. meanGroupSizePerType.length.

The first loop through the arraylists starts at [0], just like i = 0, or whatever iterator you have, but when it gets to the second loop it will go through the length of your array, so don't worry about initializing it at [0] in the first loop.

Hope that helps someone!

PhiLho

"here's the file - http://piratepad.net/2qUISlwOK7 [...] Line 213"
There are less than 30 lines in the page you link to. I can't take a look at the line 213...

KesterR

Oh, sorry, but that was five days ago and I've re-used that piratepad since...

That error got resolved anyway.

Thanks!

PhiLho

Bad idea (the reuse of links), don't forget threads are here to be read by whoever search them...

KesterR

Sorry, I won't do it again, and I'll upload my complete code somewhere public when I've finished and re-post a link here and say which line this was about. Fair point, sorry.