I am trying to open a CSV via LoadTable with Processing 2 then parse a column as an array.
I have this so far:
Table table;
void setup() {
table = loadTable("random.csv", "header");
If I do something like this:
for (TableRow row : table.rows()) {
int nums = row.getInt("Column1");
println(nums);
}
It displays all of the values in my table like it should. I would like to now store this into an array... e.g. int [ ]
Any help?
Just create array and store it in it :)
int size = table.rows().size();
int[] array = new int[size];
int i = 0;
for (TableRow row : table.rows()) {
int nums = row.getInt("Column1");
println(nums);
array[i] = nums;
i++;
}
It can also be done using getIntColumn() in one line: int[] num = table.getIntColumn("Column1")
So maybe it's even not necessary as you can do something like table.getIntColumn("id")[10]
here a running example:
//building a sample table
//not your case...
Table table;
TableRow[] someRows = new TableRow[40];
void setup() {
table = new Table();
table.addColumn("id");
for (int i=0; i < someRows.length; i++) {
someRows[i] = table.addRow();
someRows[i].setInt("id", i);
}
///
//here :) one line.
int[] ids = table.getIntColumn("id");
println(ids);
// or direct approach
println("without intermediary Array: row 10 = " + table.getIntColumn("id")[10]);
}
Although @Libik's answer will work, another option is to create an ArrayList
List<Integer> myNums = new ArrayList<>();
for (TableRow row : table.rows()) {
int nums = row.getInt("Column1");
myNums.add(nums)
println(nums);
}
The advantage here is the ArrayList can grow as you need it to and needn't be pre-allocated.
If you specifically need an array of ints for the final result, and not an ArrayList, the existing answers to this SO question talk about how to do the conversion.
