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Conversion from string to File

[7 Replies]
- 04-Jul-2013 10:47 AM
- Forum: Programming Questions
Hi guys,

I am trying to make my processing file load a data file on startup. I am using the selectFolder() command and this is working:

selectFolder("Select folder containing constant input spreadsheets e.g. deadloads.csv", "folderSelected");

However, when I try to choose the initial folder to be the same as the sketch folder, I am having trouble.

File programFolder = file(sketchPath(""));

selectFolder("Select folder containing constant input spreadsheets e.g. deadloads.csv", "folderSelected", programFolder);

How do I convert a string to a File data type?

Thanks in advance

Arrays of a class

[6 Replies]
- 13-Feb-2013 10:07 AM
- Forum: Programming Questions
Hi all,

I am trying to create an array of a class but am getting an error code. The code below is supposed to import multiple csv files with file names listed in the list array . Please can you let me know what I have done wrong?

String[] list;

WINCH[] winch;

void setup(){

filelist();

WINCH[] winch =new WINCH[list.length];

for (int n=0 ; n<list.length ; n++ ){

winch[n] = new WINCH(n);

}

}

void filelist(){

//create file list

int starttrack = 4;

int endtrack = 6;

int startwinch = 1;

int endwinch = 4;

int winchquantity = (endtrack-starttrack+1)*(endwinch-startwinch+1);

String[] list = new String [winchquantity];

int index = 0;

for (int tr=starttrack;tr<endtrack+1;tr++) {

for (int wi=startwinch;wi<endwinch+1;wi++){

list[index] = "car_" + tr + "_" + wi +".txt";

index++;

}}

}

class WINCH{

String lines[];

String [][] csv;

int csvWidth=0;

float [] x;

float [] y;

int timesteps;

WINCH(int ind){

//load CSV

int index = ind;

lines = loadStrings(list[index]);

//calculate max width of csv file

for (int i=0; i < lines.length; i++) {

String [] chars=split(lines[i],',');

if (chars.length>csvWidth){

csvWidth=chars.length;

}

timesteps=lines.length-1;

}

//defines variables

csv = new String [lines.length][csvWidth];

x = new float [timesteps];

y = new float [timesteps];

//parse values into csv array

for (int i=0; i < lines.length; i++) {

String [] temp = new String [lines.length];

temp= split(lines[i], ',');

for (int j=0; j < temp.length; j++){

csv[i][j]=temp[j];

}

}

//parse variables to time, position variables

for (int i=0; i < timesteps; i++) {

x[i]=float(csv[i+1][1])*(-1);

y[i]=float(csv[i+1][0]);

}

}}

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