Processing not showing data values and not reading cities?

user_12198200 0
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Hello im having trouble with processing where its not outputting the data of my columns? It's reading the rows but inside each row it outputs it as a 0 except for "Number" even though there is data inside them?

Also i dont know how to seperate the cities as it definitly is not a int value?

My code:

int[][] data;

void setup() {

size(800, 600);

String[] lines = loadStrings("datasheet.csv");
println("there are " + lines.length + " lines");   

String[] header = split(lines[0], ','); 
println(header[0] + " " + header[1] + " " + header[2] + " " + header[3] + " " + header[4]);


data = new int[5][lines.length-1]; 

for (int i = 1 ; i < lines.length; i++) {
String[] dataStr = split(lines[i], ',');

data[0][i-1] = int (dataStr[0]);
data[1][i-1] = int (dataStr[1]);
data[2][i-1] = int (dataStr[2]);
data[3][i-1] = int (dataStr[3]);
data[4][i-1] = int (dataStr[4]);

println (data[0][i-1] + "  " + data[1][i-1] + "  " + data [2][i-1] + "  " + data [3][i-1] + "  " + 
data 
[4][i-1]);

}
}

This is what it is outputting

enter image description here

processing java
1 Answers

There are many issues in your code which you need to address:

A. Instead of printing the header in the following way:

println(header[0] + " " + header[1] + " " + header[2] + " " + header[3] + " " + header[4]);

you could do it in the following elegant way:

println(String.join(" ", header));

B. You need to declare data as new int[no-of-rows][no-of-columns] but you have done it the other way round. Moreover, instead of using a hardcoded value like 5, you should have used header.length.

C. Printing the data can also be done elegantly using String::join in the same way as done above for printing the header.

Given below is the code incorporating these points:

String[][] data;

void setup() {
    size(800, 600);
    String[] lines = loadStrings("datasheet.csv");
    println("there are " + lines.length + " lines");
    String[] header = split(lines[0], ','); 
    println(String.join(" ", header));
    data = new String[lines.length -1][header.length];
    for (int i = 1 ; i < lines.length; i++) {
        String[] dataStr = split(lines[i], ',');
        data[i-1] = dataStr;
        println(String.join(" ", dataStr));
    }
}

Feel free to comment in case of any doubt/issue.

user_108195730
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