strpos function not found

[maen assali]

when I even I put this command I get this result

. gen has_x= strpos (ICD , "X") >0
strpos not found
r(111);

* Example generated by -dataex-. To install: ssc install dataex
clear
input int(DOB Dateofstudy) str4 GENDER byte AGE str4 ICD
-3538 19715 "Male" 63 "10X" 
-5492 19711 "Male" 69 "13X" 
-2395 19722 "Male" 60 "53N" 
-4061 19712 "Male" 65 "33NX"
-3676 19719 "Male" 64 "22G" 
-3408 19719 "Male" 63 "27J" 
-4884 19712 "Male" 67 "114s"
-5500 19719 "Male" 69 "221" 
-3542 19718 "Male" 63 "21x" 
-3748 19722 "Male" 64 "225x"
end
format %tdnn/dd/CCYY DOB
format %tdnn/dd/CCYY Dateofstudy

any help or advice? thank you

[Nick Cox]

Take out the spaces following the function name. Stata thinks you’re referring to a variable name strpos — which isn’t in your dataset.

---

[maen assali]

Thanks Nick

[Francesco Amodeo]

Hello,

I have a similar problem. Stata does not recognise command "strpos", so I tried to install it with ssc install strpos, but it can't find it.

. strpos(ER_1968,"_")
command strpos is unrecognized
r(199);

And:

. ssc install strpos
ssc install: "strpos" not found at SSC, type search strpos
(To find all packages at SSC that start with s, type ssc descr
> ibe s)
r(601);

Thanks a lot in advance,

Francesco

[Rich Goldstein]

"strpos" is a function, not a command; however, you can still get help for it (it is part of official Stata) by

help strpos

[Francesco Amodeo]

"strpos" is a function, not a command; however, you can still get help for it (it is part of official Stata) by

help strpos

Thanks.

Of course I tried to do that, with no results. Here:

It's very weird, isn't it?

Could you tell me how to act now? It's Stata 15.0, I don't understand.


Francesco

[Sergiy Radyakin]

Of course I tried to do that, with no results. Here:

There is like a whole bunch of the results. Here:

[Jorrit Gosens]

What you want is:

gen some_variable = strpos(ER_1968,"_")

[Francesco Amodeo]

There is like a whole bunch of the results. Here:

[ATTACH=CONFIG]n1505006[/ATTACH]

Thanks Sergiy, the problem is that I clicked on those results, and no one of them seems to be installed or installable. This is why I was confused. No usual procedure for finding/installing commands.

[Sergiy Radyakin]

It is already installed and you don't need to install anything else to use it.

sysuse auto, clear
count if strpos(make, "A")>0
count if strpos(make, "A")==0
count

[Nick Cox]

Francesco Amodeo In #5 you already copied the answer to your question from #4. strpos() is a function, not a command. It is part of official Stata. There is no need to install anything (and no scope to do that any way).