Displaying 3 results from an estimated 3 matches for "wind_dir".
2006 Mar 14
1
Ordered logistic regression in R vs in SAS
I tried the following ordered logistic regression in R:
mod1 <- polr(altitude~sp + wind_dir + wind_speed + hr, data=altioot)
But when I asked The summary of my regression I got the folloing error message:
> summary (mod1)
Re-fitting to get Hessian
Error in optim(start, fmin, gmin, method = "BFGS", hessian = Hess, ...) :
the initial value of 'vmin' is not...
2024 Oct 30
1
Extracting wind direction and wind speed from wind rose plot
...uence, "%H"))
>)
>
>> head(df)
> year month day hour
>1 2019 1 1 0
>2 2019 1 1 1
>3 2019 1 1 2
>4 2019 1 1 3
>5 2019 1 1 4
>6 2019 1 1 5
>
>
>And I want to add 2 more cols to this dataframe as Wind_Dir and Wind_Speed
>that the data extracted from the plot by analyzing it.
>Is there any library to do this? or any function to write for this purpose?
>I would be more than happy if you please help me to do this.
>Sincerely
>
>
>
>
>
>
>
--
Sent from my phone. Please...
2024 Oct 30
2
Extracting wind direction and wind speed from wind rose plot
...quot;%d")),
hour = as.integer(format(time_sequence, "%H"))
)
> head(df)
year month day hour
1 2019 1 1 0
2 2019 1 1 1
3 2019 1 1 2
4 2019 1 1 3
5 2019 1 1 4
6 2019 1 1 5
And I want to add 2 more cols to this dataframe as Wind_Dir and Wind_Speed
that the data extracted from the plot by analyzing it.
Is there any library to do this? or any function to write for this purpose?
I would be more than happy if you please help me to do this.
Sincerely
--
Best Regards
Javad Bayat
M.Sc. Environment Engineering
Alternative Mail...