question

1. RStudio is not R; it is a separate for profit organization/company 
that contributes free packages to R and also provides both free and 
non-free R-oriented software. RStudio.com is their website (as you
know) and 
https://urldefense.proofpoint.com/v2/url?u=https-3A__community.rstudio.com_-23&d=DwICAg&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsRzsn7AkP-g&m=yodeWPdITg41plvXqsIKQE3kAZQK8RTKQZ9yhs8FfhsW6yZEEls9W8uAyttddQBY&s=vBlYcBj5nepe5Rcfkv1USa9sbPabHwSrJC3dzvUB_wY&e=  is where you can post questions about *their* products.

2. HOWEVER... your query seems to be related to a special (not
standard) R package, not RStudio, specifically the 'flowr' package.
This general r-help list is not usually a good place to post queries 
about such specific packages -- there are thousands of them! Maybe you 
will get lucky and someone here will be able to help you.  But it is 
recommended in the posting guide (linked below) that a better option 
is to contact the package maintainer, which you can find via the:

maintainer("flowr")

command at the R console prompt.

Hope this helps.

Bert Gunter

"The trouble with having an open mind is that people keep coming along 
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Tue, Mar 15, 2022 at 10:52 AM dalfardi.s <dalfardi.s at ut.ac.ir> wrote:
hello everyone

I faced an problem in Rstudio version 4.1.2 and while i am new in R 
and Rstudio, but i search alot in internet and have thaught about the 
reason of it but all i done didnt fix it.

I have a function of a package named priority flow as bellow:

RIVSMOOTH=RIVERSMOOTH(DEM=TRAVHS$DEM, DIRECTION=TRAVHS$DIRECTION, 
MASK=FARWATERSHED.MASK,RIVER.SUMMARY=SUBBASIN$SUMMARY,RIVER.SEGMENTS=S
UBBASIN$SEGMENTS,BANK.EPSILON =0.01,RIVER.EPSILON = 
0,D4=C(1,2,3,4),PRINTFLAG = T)

and all needed inputs are available but when i run it give me the 
bellow
error:

[1] "No terminal river segments provided, not adjusting DEM"
Error in RiverSmooth(dem = travHS$dem, direction = travHS$direction, 
mask = FARwatershed.mask, :
object 'active' not found

I dont know what active object is here? but all other objects are here 
available.i also assighned this needed inputs in different object 
forinstance AA=travHS$dem and then defined AA in the function but it 
return error again.

this is summary of two dataframe that included needed data:

SUMMARY(SUBBASIN)
Length Class Mode
segments 4200 -none- numeric
subbasins 4200 -none- numeric
RiverMask 4200 -none- numeric
summary 98 -none- numeric SUMMARY(TRAVHS) Length Class Mode dem 4200 
-none- numeric mask 4200 -none- numeric marked 4200 -none- numeric 
step 4200 -none- numeric direction 4200 -none- numeric basins 4200 
-none- numeric

this is part of my work and i really stumbled in it. Is there any one 
could help me?

I really appreciate it.
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