So I opened the Advanced text editor so I can use simply "/bPOLYGON ("which searches for the string "POLYGON" at the start of a word...but I can´t understand the editor syntax.
The documentation states...
"FindRegEx(string str, string regExp, [int startIdx], [bool caseSensitive], [-1])"and my TextEditor shows...
@FindString(<STRING>,<STRING>)POLYGON (What does "string str"" mean? What does "string regExp," mean...Could anyone give me an example of how I should use the Advanced Editor?
+19
In this case, "string str" means a character string to be tested, and "string regExp" means a regular expression. For example, if an attribute called "wkt" stores the WKT (i.e. a character string to be tested), this expression returns the position (0-based index) of the part matched with "POLYGON" (i.e. regular expression). If not matched, returns -1.
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@FindRegEx(@Value(wkt),POLYGON)
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However, if you need to determine if the string contains which one of "POINT", "POLYGON", "MULTIPOLYGON" etc., I think that "Conditional Value" setting is simpler than the @FindRegEx function. For example:
Just be aware that you should test MULTIPOLYGON before POLYGON, since the test conditions will be evaluated in the order from top to bottom.
Takashi
+19http://docs.safe.com/fme/html/FME_Workbench/Default.htm#transformer_parameters/Feature_Functions.htm
If you double-click or drag-and-drop the attribute name shown in FME Feature Attributes section, @Value(<attribute name>) will be added to the editor pane.
POINT (9.9699121998145532 52.9278245931941953)RegEx works when I enter
^POINT.*But not when I use...
^POINT \(
^POINT\s\(
POINT\s\(.*
+15
^POINT\\s\\( looks for a string ending with a (
wich it does not
POINT\\s\\(.* looks for a string ending with any character
+15http://www.tcl.tk/man/tcl8.4/TclCmd/re_syntax.htm
there are many sites on this topic and for all flavors.
+19AttributeCreator: Unable to find closing bracket for function FindRegEx in
If the string literal to be passed to FME Function contains a paren, it should be quoted, like this. # This seems not to be documented.
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@FindRegEx(@Value(wkt),"^POINT \\(")
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I think the last expression will be also fail if it isn't quoted.
+15
does indeed yield error AttributeCreator_2: Unable to find closing bracket for function FindRegEx
But it does not stop the proces, you just get "@FindRegEx(@Value(tsstr),^POINT \\()" as outputstring.
Same goes for the last one indeed: POINT\\s\\(.*
@FindRegEx(@Value(tsstr),^POINT \\(([\\d\\.\\s]*\\))) works with no quotes. Parens are balanced.
Also, often u need to use braces {}, when it contains reserved characters. But only when u dont wan't it to parse anything in the string.
if I use this as a test string
POINT (9.9699121998145532 52.9278245931941953)
^POINT\s\(without .*, then I get a match! I only want to match POINT\s\(....why do I need .*?
+15
It does not mean it wil work in the transformer. To see if it works in the transformer you must run it. (i use RUbulator a lot, but Rubulator can use like 3 flavors or so).
If u want more options or possibility u can use a attribute creator and use tcl
So in stead of using FindRegEx
u can use [regexp {exp} @Valeu(str)] this has a lot of ooptions. Look at
the link i send u. Almost all on that site work here.
U can also use other tcl functions this way.
without .*, then I get a match! I only want to match POINT\\s\\(....why do I need .*?
Because your string has mote items beyond the "(" so it wil not match.
and of course
regular expressions 101
— an online regex tester for javascript, php, pcre and python
wich is not the same as what is used in FME or tcl etc.
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