# Modify cylc graph but only in first year

**URL:** <https://cylc.discourse.group/t/modify-cylc-graph-but-only-in-first-year/312>\
**Category:** Cylc Support\
**Created:** [March 4, 2021, 1:58am UTC](https://cylc.discourse.group/t/modify-cylc-graph-but-only-in-first-year/312 "2021-03-04T01:58:42Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jonnyhtw](https://yyz2.discourse-cdn.com/free1/user_avatar/cylc.discourse.group/jonnyhtw/32/232_2.png) [@jonnyhtw](https://cylc.discourse.group/u/jonnyhtw)\
**Post date:** [March 5, 2021, 12:25am UTC](https://cylc.discourse.group/t/modify-cylc-graph-but-only-in-first-year/312/3 "2021-03-05T00:25:10Z")

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> [@hilary.j.oliver](#):
>
> Greetings from the Cook Strait Ferry bar 🍻

nice 😃

Thanks a lot for the info, very helpful.

I’ve subsequently realised that (I think) the solution should be even simpler than this.

This is the bit of the `site` file which I have inherited…

```auto
[scheduling]
   [[dependencies]]
      [[[0101T/P1Y]]]
         graph = """
postproc{{ '_atmos' if SPLIT_PP else '' }}[-{{FMT}}] => retrieve_ozone => redistribute_ozone => coupled & rose_arch_ozone
 """

```

So this modifies the graph in the `suite.rc` only on cycle points that start on January 1st. In this suite the resubmission period is 3 months.

Referring back to the [other ticket](https://cylc.discourse.group/t/include-a-task-in-all-but-the-first-cycle-point/115/2) and specifically Oliver Saunders’ [reply](https://cylc.discourse.group/t/include-a-task-in-all-but-the-first-cycle-point/115/3) I think all I need to do is this…

```auto
[scheduling]
   [[dependencies]]
      [[[0101T/P1Y!^]]]
         graph = """
postproc{{ '_atmos' if SPLIT_PP else '' }}[-{{FMT}}] => retrieve_ozone => redistribute_ozone => coupled & rose_arch_ozone
 """

```

… where `!` is ‘not equal to’ and `^` is the first cycle point.

Let me know if you disagree!

Cheers

Jonny

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