how can I plot particular rows of a matrix?

I have a 7208x34 matrix which columns [3 32] represent price data over the 1961-1990 period. And a row array 1x30 (the row array indicates the years from 1961 to 1990). I want to plot time series of 68 rows (i.e. grouping by cities) for each goods over the 1961-1990 period, against the 1x30 row array (years). Something looks like this:

Goods city_name price_year1961 price_year1962…

A city1 0.5

A city2 0.7

.

.

.

A city68 0.9

B city1 0.4

B city2 0.7

.

.

.

B city68 0.9

and a row vector represents the years [1961:1990].

Thank you very much!

Answer 1

[Basil C.]

You could first start by reading the columns into an array

data=readtable('Price.txt');
prices=data(:,3:30);
n=5; %in order to plot the data for city 5
city_data=prices(n:68:end,:)
year=1961:1990;

If you want to plot for individual Good

good=3 % for the data of Good 3
plot(year,city_data(good,:))

For all the goods

for i=1:size(city_data,1)
plot(year,city_data(i,:))
hold on
end

Answer 2

[KSSV]

If A is your data...and you want to plot ith row; use

plot(A(i,:))

[ogheneochuko oyaide]

bro. you are good. thanks

Answer 3

[Tran Trang]

Hi B Matlabi,

Thank you for your reply. should it be city_data = prices(n:68:end,:), instead of city_data = prices(n:n:end,:), as the city repeats after 68 rows?

And how can I plot all the goods but with each plot for each good?

Thank you.

[Basil C.]

Yes you are correct, it should be

city_data = prices(n:68:end,:)

In order to plot all the goods but with each plot for each good at once you could try the subplot function

[Tran Trang]

Thank you very much!