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+ + + ++ Hello, you've successfully reach the Corps Water Management + System (CWMS) public data system. Multiple sites are available please + follow one of the links below for access to our data: +
++ The location_group endpoint can return a large number of location + assignments. The endpoint allows the user to specify a regex on the + location_category to filter the results. +
+ Given the following location categories: ++ Providing a regex of "cat" will match all of the above categories. + This may be surprising. The regex does not need to match the entire + string. It only needs to match a portion of the string. The regex + "cat" will match all of the above categories because they all contain + the string "cat". "CAT" will also match all the categories because the + regex is case-insensitive. +
+
+ You can use the regex "^cat". The "^" character is a
+ special character that matches the beginning of the string. The regex{" "}
+ "^cat" will match the first 5 categories in the list
+ above.
+
+ To find categories that start with cat and contain a 6 in any position
+ you could use the regex "^cat.*6"
+
+ To match a literal period character you can escape it with a
+ backslash. To match the string "CWMS 3.3" you can use the regex "CWMS
+ 3\.3" To match the string "ALBT.Stage" you can use the regex{" "}
+ "ALBT\.Stage" or "ALBT[.]Stage" or{" "}
+ ALBT[\.]Stage
+
+ you can build a regular expression with the "|" character which is the + OR operator. The regex "^cat145057$|^locCat043814$" will match both of + those categories and only those two categories. +
++ The regex "cat[0-3]" will match any category that contains "cat" + followed by a 0,1,2 or 3 This will not match cat402365 because the 4 + is not in the range 0-3. +
+