# Use command line parameter for location in a project bookmark

**URL:** <https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102>\
**Category:** Community\
**Created:** [28 September 2022 01:42 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102 "2022-09-28T01:42:04Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![JPowell](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@JPowell](https://community.riskscape.org.nz/u/JPowell)\
**Post date:** [28 September 2022 01:42 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/1 "2022-09-28T01:42:04Z")

</div>

How can I use a command line parameter to change the location of a file in a bookmark?  
eg

```auto
[bookmark tanks]
location = Data/notAFile.csv
set-attribute.latitude = Lat_HH
set-attribute.longitude = Long_HH
set-attribute.HH_tot = HH_tot
set-attribute.UtArea_rf = UtArea_rf
set-attribute.tank_vol = tank_vol
set-attribute.tank_cond = tank_cond
set-attribute.geom = create_point(Long_HH,Lat_HH)
crs-name = EPSG:4326

```

gives

```auto
powellj@localhost ~/versioned/riskscape-shiny-app/trunk/code $ riskscape model run finalTotals -p "tanks.location='Data/RMITanksTrimmed.csv'"
[WARNING] Surplus parameters were given that were ignored: [tanks.location], did you mean one of [tankWaterFolder]?
Failed to validate model for execution
  - Failed to validate 'input(relation: 'tanks', name: 'exposure') as exposures_input' step for execution
    - Problems found with 'relation' parameter
      - Problems found with 'tanks' bookmark in location file:///home/powellj/versioned/riskscape-shiny-app/trunk/code/Data/notAFile.csv
        - File '/home/powellj/versioned/riskscape-shiny-app/trunk/code/Data/notAFile.csv' does not exist

```

I want users to be able to specify the name of their input csv without having to resupply the set-attribute commands that are in the bookmark.

---

<div class="post-metadata">

**Author:** ![timbeale](https://avatars.discourse-cdn.com/v4/letter/t/57b2e6/32.png) [@timbeale](https://community.riskscape.org.nz/u/timbeale)\
**Post date:** [28 September 2022 01:59 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/2 "2022-09-28T01:59:45Z")

</div>

In this case, you put the location into the pipeline itself, rather than the bookmark. The `bookmark()` function takes a second `options` argument that lets you override any of the bookmark’s parameters, including the file location. So your model would start off something like:

```auto
input(bookmark('tanks', {location: $tanks_location}))

```

---

<div class="post-metadata">

**Author:** ![JPowell](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@JPowell](https://community.riskscape.org.nz/u/JPowell)\
**Post date:** [28 September 2022 02:46 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/3 "2022-09-28T02:46:35Z")

</div>

Thanks Tim that worked perfectly

---

<div class="post-metadata">

**Author:** ![JPowell](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@JPowell](https://community.riskscape.org.nz/u/JPowell)\
**Post date:** [29 September 2022 01:30 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/4 "2022-09-29T01:30:39Z")

</div>

Is it possible to also do this with filters?

I have the bookmark

```auto
[Farms]
location = Farms.shp
format = shapefile
filter = region = 'AUCK'

```

and

```auto
input(relation: bookmark('Farms', {filter: $region_filter}), name: 'exposure') as exposures_input

```

in my pipeline

When I run with

```auto
riskscape model run FloodExposure -p "region_filter = region = 'CANT'"

```

I get

```auto
powellj@localhost ~ $ riskscape -e model run FloodExposure -p "region_filter = region = 'CANT'"
Failed to validate model for execution
  - Failed to validate 'input(relation: bookmark('Farms', {filter: region = 'CANT'}), name: 'exposure') as exposures_input' step for execution
    - Parameter 'relation' requires value, but expression 'bookmark('Farms', {filter: region = 'CANT'})' cannot be realized
      - Expected expression 'region' to be a Struct, but got Nullable[Anything] instead
      - Problems found with 'bookmark' riskscape function
        - Argument 'type' is required
nz.org.riskscape.engine.cli.ExitException: Problem(ERROR: CANNOT_REALIZE['interface nz.org.riskscape.engine.model.Model'] affected=interface nz.org.riskscape.engine.model.Modelchildren=[Problem(ERROR: CANNOT_REALIZE['exposures_input:[input]'] affected=exposures_input:[input]children=[Problem(ERROR: PARAMETER_EXPRESSION_NOT_REALIZABLE['relation', 'bookmark('Farms', {filter: region = 'CANT'})']children=[Problem(ERROR: NOT_STRUCT['PropertyAccess[region]', 'Nullable[Anything]'] affected=PropertyAccess[region]), Problem(ERROR: PROBLEMS_FOUND[''bookmark' riskscapefunction'] affected=interface nz.org.riskscape.engine.function.RiskscapeFunction:bookmarkchildren=[Problem(ERROR: REQUIRED['type'] affected=type)])])])])
        at nz.org.riskscape.engine.cli.model.BaseModelRunCommand.realize(BaseModelRunCommand.java:238)
        at nz.org.riskscape.engine.cli.model.RunCommand.doCommand(RunCommand.java:52)
        at nz.org.riskscape.engine.cli.ApplicationCommand.run(ApplicationCommand.java:150)
        at nz.org.riskscape.engine.cli.Main.runCommand(Main.java:244)
        at nz.org.riskscape.engine.cli.Main.runMain(Main.java:210)
        at nz.org.riskscape.engine.cli.Main.main(Main.java:95)

```

I can see the type it is getting back is not what it wants but I dont know how to change that

This does work fine if I remove the filter expression from in the pipeline and just have it in the bookmark IE it correctly runs with just AUCK data.

---

<div class="post-metadata">

**Author:** ![timbeale](https://avatars.discourse-cdn.com/v4/letter/t/57b2e6/32.png) [@timbeale](https://community.riskscape.org.nz/u/timbeale)\
**Post date:** [29 September 2022 03:05 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/5 "2022-09-29T03:05:51Z")

</div>

OK, that error message has got me stumped as well.

However, a simpler way to do it would be to just remove the filter from the bookmark and add it as a pipeline step instead. E.g.

```auto
input('Farms', name: 'exposure') -> filter($region_filter)

```

That should work, and do essentially the same thing. Note that you will need to add `exposure` to the parameter now, so it will become something like: `-p "region_filter = exposure.region = 'CANT'"`. It’s a bit more to type, but this approach still lets you incalude _all_ regions (i.e. filter nothing), e.g. `-p "region_filter=true"`.

If you’re _always_ going to filter out one region, then you could just make the region name the parameter, e.g.

```auto
input('Farms', name: 'exposure') -> filter(exposure.region = $region)

```

Then you can call your model just with `-p "region='CANT'"`.

I’ll investigate some more why what you were originally trying to do doesn’t work and let you know.

---

<div class="post-metadata">

**Author:** ![timbeale](https://avatars.discourse-cdn.com/v4/letter/t/57b2e6/32.png) [@timbeale](https://community.riskscape.org.nz/u/timbeale)\
**Post date:** [29 September 2022 21:26 UTC](https://community.riskscape.org.nz/t/use-command-line-parameter-for-location-in-a-project-bookmark/102/6 "2022-09-29T21:26:39Z")

</div>

So I don’t fully understand why, but your original pipeline will work if you pass the filter expression through as a text string, e.g.

```auto
riskscape model run FloodExposure -p "region_filter = 'region = \'CANT\''"

```

I think this is just a limitation with the current support for parameterized pipelines. We do have a ticket in the backlog to improve this in future.

I’d recommend using the separate `filter` step approach in my previous post though, as I think that’s simpler to understand/get right.