Data Mapping Magnetic

hala

Hello,

I have data mapping magnetic fields in eight-story building. My Data folder contains excel sheets of magnetic field in each floor. I need to assign particle system to each floor and connect the X-Axis, Y-Axis and Z-axis from the excel sheets to the movement of the particles. Here is a link to what I have so far: https://www.dropbox.com/s/ham79242z4nmhp0/magnetic_field_Multiple_Tables_1.zip?dl=0

Help!

Chrisir

Help with what?

Please describe where you are stuck...

What have you tried?

hala

I can’t figure out how to connect the data to the particles.

Chrisir

well, when you want one particle for each line of the csv-files

you need to loop over the csv (or the tables) and use the data to setup one particle

to do

so instead of

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

you loop over the table.

AND to do

instead of

particlesCollection [i] = new particles (random(0, 200), random(0, 200), random(0, 2), random(0, 1));

you need

    float XAxis = row.getInt("XAxis"); 
    float YAxis = row.getInt("YAxis"); 
    float ZAxis = row.getFloat("ZAxis"); 

    particlesCollection [i] = new particles (XAxis, YAxis, ZAxis , random(0, 1));

or so....

hala

I get an error telling me that it cannot find anything named "row".

Chrisir

it's pseudo code

I was just copying stuff from your code, from another place

of course you need to copy the context and make the adjustments

Chrisir

when you want as many particles as you have measuring data / lines

you need an ArrayList for the particles where you don't have a fixed maximum number but can just add more and more particles (since you don't know their number)

when you want as many particles as you have measuring data / lines : you must loop over the measuring data / lines and generate the particle here with new and put them into the ArrayList with add:

ArrayList<Particle> particles = new ArrayList(); 

Particle newParticle = new Particle(......................); 
particles.add(newParticle);

Chrisir

since you have the csv for each floor separately, consider to have a separate ArrayList of particles for each floor...

or have an array of ArrayLists of particles for each floor...

hala

Ok Thank you ! I will try to do that ...

hala

How do I make an array of ArrayLists ?

_vk

How do I make an array of ArrayLists ?

ArrayList <ArrayList <String>> s = new ArrayList < ArrayList<String>>();

ArrayList <String> t = new ArrayList<String>();

t.add("one");
t.add("two");
s.add(t);
println(s.get(0).get(1));
s.get(0).add("three");
println(s.get(0).get(2));
println(s.get(0));  

_vk

Ops sorry, I mis read that's an ArrayList of Arraylists...

_vk

ArrayList[] s = new ArrayList[4];

ArrayList <String> t = new ArrayList<String>();

t.add("one");
t.add("two");

s[0] = t;
println(s[0].get(1));

s[0].add("three");
println(s[0].get(2));
println(s[0]);