Year state mismatch CLI error message

[ran-codes]

It would be iuseful for the error message to be more targeted by error type. This way users can quickly figure out what they are doing wrong. Lets say we have the following types of errors; see suggested CLI messages

• type 1: too many years and not enough states.
• type 2: too many states not enough years.
• type 3: too many year for a single

type 1: too many years and not enough states.

> years_tmp = 2015:2017
> state_tmp = 'PA'
> df1 = summarise_svi(
+   year = years_tmp,
+   state = state_tmp,
+   geography = 'zcta' )
! The number of years and states requested are not the same.
> Consider using pairs of year and state. For nation level data ('state = NULL'), use single year argument.

A more useful CLI message for a new user:

! You inputed 3 years but only one state. find_svi() requires year and state requests to be 1:1.
> If you mean to find get multiple years of data for {state}. Try rep({state},3) as the state arguement.

type 2: too many states not enough years.

same logic as type 1

A more useful CLI message for a new user:

! You inputed 1 years but only four state. find_svi() requires year and state requests to be 1:1.
> If you mean to find get multiple state of data for one year. Try rep({year},length(state)) as the year arguement.

[heli-xu]

Thanks for the detailed message and examples! Updated as suggested, also added messages for nation-level request (state = NULL or "US").

[ran-codes]

Looks great. It seems like!

storeing test code for future reference

## case 1/3
years_tmp = 2015:2017
state_tmp = 'PA'
df1 = find_svi(
    year = years_tmp,
    state = state_tmp,
    geography = 'zcta' )
## case 2
years_tmp = 2015 
state_tmp = rep('PA',5)
df1 = find_svi(
  year = years_tmp,
  state = state_tmp,
  geography = 'zcta' )