Thread Subject: changing x-axis from hour to day

Hi, right now, I am doing a plot:

My "y" is hourly-traffic, which has 480 entries. My "x" is
a vector with elements 1 to 480. It represents hours.

plot(x,y)
axis([1,480,0,1])
set(gca,'xTick',0:24:480)
xlabel('\fontsize{10} Hour')
ylabel('\fontsize{10} Traffic)

In this plot, the x-axis shows "24, 48, 72,...,480" at the
corresponding positions.

But now I need to change from hour to day. That is, I want
the x-axis in my plot to show "1, 2, 3,..., 20" in the
place of the hour positions. Could someone show me how to
do that? Thanks!!!

Never mind. I've figured it out. It turns out this is
what I need to write:

plot(x,y)
axis([1,480,0,1])
set(gca,'xTick',0:24:480,'XTickLabel',0:1:20)
xlabel('\fontsize{10} Day')
ylabel('\fontsize{10} Traffic)

"Ka Lee" <kaloklee@gmail.com> wrote in message <g1jud1
$6ru$1@fred.mathworks.com>...
> Hi, right now, I am doing a plot:
>
> My "y" is hourly-traffic, which has 480 entries. My "x"
is
> a vector with elements 1 to 480. It represents hours.
>
> plot(x,y)
> axis([1,480,0,1])
> set(gca,'xTick',0:24:480)
> xlabel('\fontsize{10} Hour')
> ylabel('\fontsize{10} Traffic)
>
> In this plot, the x-axis shows "24, 48, 72,...,480" at
the
> corresponding positions.
>
> But now I need to change from hour to day. That is, I
want
> the x-axis in my plot to show "1, 2, 3,..., 20" in the
> place of the hour positions. Could someone show me how
to
> do that? Thanks!!!

"Ka Lee" <kaloklee@gmail.com> wrote in message <g1jud1
$6ru$1@fred.mathworks.com>...
> Hi, right now, I am doing a plot:
>
> My "y" is hourly-traffic, which has 480 entries. My "x"
is
> a vector with elements 1 to 480. It represents hours.
>
> plot(x,y)
> axis([1,480,0,1])
> set(gca,'xTick',0:24:480)
> xlabel('\fontsize{10} Hour')
> ylabel('\fontsize{10} Traffic)
>
> In this plot, the x-axis shows "24, 48, 72,...,480" at
the
> corresponding positions.
>
> But now I need to change from hour to day. That is, I
want
> the x-axis in my plot to show "1, 2, 3,..., 20" in the
> place of the hour positions. Could someone show me how
to
> do that? Thanks!!!

Someone will likely come up with something more elaborate,
but the simplest way:

plot(x/24,y)

Barry