How to plot a Receiver Operating Characteristic (ROC) curve

I am trying to plot a ROC Curve.

Base State:  259  650  800  983  1249  1377  1436  1550  2089  2100  2450  2690  3041  3200  3350  3441 

Scenario 1:  250  500  700  850  1050  1200  1350  1500  1800  2040  2300  2400  2650  2950  3150  3440 

Scenario 2:  238  560  611  950  1055  1280  1378  1528  1747  2080  2350  2550  2970  3187  3300  3420 

Scenario 3:  250  550  680  900  1085  1150  1311  1543  1733  1935  2240  2400  2685  3050  3200  3400

Answer 1

[Aditya Mittal]

Hi,

It is unclear from your question that what you want help for. I am assuming that this data is your output from the Roc curve function. In such condition you want to plot the results to plot a curve.

Here is the sample code which you can use for plotting the curve.

base = [259 650 800 983 1249 1377 1436 1550 2089 2100 2450 2690 3041 3200 3350 3441];

s1 = [250 500 700 850 1050 1200 1350 1500 1800 2040 2300 2400 2650 2950 3150 3440 ];

s2 = [238 560 611 950 1055 1280 1378 1528 1747 2080 2350 2550 2970 3187 3300 3420 ];

s3 = [ 250 550 680 900 1085 1150 1311 1543 1733 1935 2240 2400 2685 3050 3200 3400];

plot(base , s1);

hold on;

plot(base , s2);

plot(base , s3);

hold off;

You can use this sample code to plot the ROC curve for the given data. For more help regarding ROC curve you can visit below link.

https://www.mathworks.com/help/stats/perfcurve.html

[kentridge mantsha]

Thank you for dedicating your time and energy into helping me. Thanks for the link

[Aditya Mittal]

My Pleasure

[kentridge mantsha]

Hi.i was able to go through most of the examples, but I’m still struggling with calculating labels (scores also)for my question