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Processing Assignment Help | Data Visualization Using Processing

In this blog we will learn how to use processing for data visualization, Processing language now has applications in several areas, including data visualization.

Run below command to draw basic command:

size(1200, 200);
ellipse(600, 100, 100, 100);


These commands are called functions. We use two of them: size and ellipse.The first defines the size of the document we are going to work with (in pixels). The second draws an ellipse.

size (width of the document, height of the document);
ellipse (horizontal coordinate of the ellipse, vertical coordinate of the ellipse, width of the ellipse, height of the ellipse);

Look other commands:


Visualization Using Data

Below the script which used to visualize the data

size(1200, 200);
Table tabela = loadTable(“cidades.tsv”, “header”);
for(int i = 0;
i < tabela.getRowCount();
i = i + 1){
TableRow linha = tabela.getRow(i);
rect(120*i, 50, linha.getInt(“área”), linha.getInt(“área”));

Example to read text file data:

// This code will print all the lines from the source text file.
String[] lines = loadStrings("file.txt");
println("There are " + lines.length + " lines.");

Now draw the plot using csv data file

int[] data; void setup() { size(200, 200); // Load text file as a String String[] stuff = loadStrings("data.csv"); // Convert string into an array of integers using ',' as a delimiter data = int(split(stuff[0], ',')); } void draw() { background(255); stroke(0); for (int i = 0; i<data.length; i++) { // Use array of ints to set the color and height of each rectangle. rect(i*20, 0, 20, data[i]); } noLoop(); }

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