Project cards not changing assignment groups

[jhelsel11]

I applied a series of project cards to correct large problems with the assignment groups in the original network Sijia developed (prior to November 2019). These project cards did not change the assignment group in the highway network as expected.

@i-am-sijia suggested that either Network Wrangler or Lasso is preventing changes to the assignment group without some override key. @kulshresthaa, do you know whether it's the case that project cards with changes to the assignment group will fail to propagate those changes back to the fixed width network that is written to disk by lasso?

[jhelsel11]

@DavidOry, tagging you so you're up to date for Met Council meetings.

[i-am-sijia]

assign_group is a calculated variable in Met Council standard, instead of being a network standard variable for wrangler. And Lasso calculates it in the step: network standard to Met Council standard.

We need to make sure:

1. Network after wrangler applying the project cards has assign_group
2. Update Lasso to take assign_group from wrangler instead of calculating and overwriting, I'm on this.

[i-am-sijia]

Wrangler cannot take existing for assign_group

  properties:
  - existing: 1
    property: assign_group
    set: 2

because assign_group is not an attribute in network standard. The solution is to remove existing

  properties:
  - property: assign_group
    set: 2

so that wrangler can pass along the assign_group value to Lasso.

I will make changes in Lasso to avoid overwriting any assign_group values from wrangler.

[e-lo]

I think it would be fairly easy to make Wrangler a little more resilient here.

Specifically, I believe the desired function should be:

• have a setting in Wrangler (which we should make more configurable) that is existing_value_strict
• if have an existing: but the value doesn't match:
  - if existing_strict, then fail
  - otherwise, warn
• if have an existing: but variable doesn't exist, give a warning (should it fail if we are strict?)

[jhelsel11]

@i-am-sijia, I reran scenario creation and exported the fixed width files with the updates you made yesterday. The link assignment groups were not changed to the appropriate values. Let me know if you want to touch base or run a smaller test network to confirm.