Re: Trying to Plot grid lines every 7 days

[Tim Pierce]

Okay, I can work around the problem with this

# I use this to set the major grid lines every 7 days

set (gca, 'xtick', min(xm1):7:max(xm1) )

#datetick( "x", "ddd dd mmm") - replace this with

get( gca, 'xtick' );

datestr( ans, "ddd dd mmm" );

set (gca, 'xticklabel', ans );

It's not really very ideal though.

On 9 August 2017 at 03:48, Tim Pierce <address@hidden> wrote:

There seems to be a bug with datetick

I've tried on

Octave 4.0.0 OS
Octave 4.2.1 Win

Same, dates jump off to the side

I suspect I might be able to work around by keeping integers for gridlines (which behave), and then 'forcibly' setting my own xticklabels 

On 9 August 2017 at 00:00, Doug Stewart <address@hidden> wrote:

On Tue, Aug 8, 2017 at 6:03 PM, Tim Pierce <address@hidden> wrote:

# see my original graph (a sin-wave over 30 days)

plot( 1:30, sin((1:30) .* (2 * pi / 30) ) )

grid on

set (gca, 'xtick', 1:7:30 )

# So far  puts grid line every 7 days - good!

# Now this screws it and the xticks jump back to every 5 days 

datetick ( 'ddd dd')

# So I re-add this - now the whole axis jumps to the right so the days are incorrect (not it only goes up to 20th day)

set (gca, 'xtick', 1:7:30 )

I want every day to be monday, or sunday, or whatever

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I see the same actions that you saw.

I am on ubuntu 16.04 and octave 4.2.1+ 

--

DAS