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mlr reshape UTs/doc

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This commit is contained in:
John Kerl 2016-02-03 21:41:09 -05:00
parent 7797650f40
commit ed2b54256d
3 changed files with 36 additions and 0 deletions
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12
c/mapping/mapper_reshape.c
View file

@ -89,9 +89,14 @@ static void mapper_reshape_usage(FILE* o, char* argv0, char* verb) {
fprintf(o, " -r {input field regexes} -o {key-field name,value-field name}\n");
fprintf(o, " These pivot/reshape the input data such that the input fields are removed\n");
fprintf(o, " and separate records are emitted for each key/value pair.\n");
fprintf(o, " Note: this works with tail -f and produces output records for each input\n");
fprintf(o, " record seen.\n");
fprintf(o, "Long-to-wide options:\n");
fprintf(o, " -s {key-field name,value-field name}\n");
fprintf(o, " These pivot/reshape the input data to undo the wide-to-long operation.\n");
fprintf(o, " Note: this does not work with tail -f; it produces output records only after\n");
fprintf(o, " all input records have been read.\n");
fprintf(o, "\n");
fprintf(o, "Examples:\n");
fprintf(o, "\n");
fprintf(o, " Input file \"wide.txt\":\n");
@ -119,6 +124,13 @@ static void mapper_reshape_usage(FILE* o, char* argv0, char* verb) {
fprintf(o, " 2009-01-03 Y 1.3179287\n");
fprintf(o, "\n");
fprintf(o, " Input file \"long.txt\":\n");
fprintf(o, " time item value\n");
fprintf(o, " 2009-01-01 X 0.65473572\n");
fprintf(o, " 2009-01-01 Y 2.4520609\n");
fprintf(o, " 2009-01-02 X -0.89248112\n");
fprintf(o, " 2009-01-02 Y 0.2154713\n");
fprintf(o, " 2009-01-03 X 0.98012375\n");
fprintf(o, " 2009-01-03 Y 1.3179287\n");
fprintf(o, "\n");
fprintf(o, " %s --pprint %s -s item,value long.txt\n", argv0, verb);
fprintf(o, " time X Y\n");

12
doc/mlr.1.premade
View file

@ -781,9 +781,14 @@ Wide-to-long options:
-r {input field regexes} -o {key-field name,value-field name}
These pivot/reshape the input data such that the input fields are removed
and separate records are emitted for each key/value pair.
Note: this works with tail -f and produces output records for each input
record seen.
Long-to-wide options:
-s {key-field name,value-field name}
These pivot/reshape the input data to undo the wide-to-long operation.
Note: this does not work with tail -f; it produces output records only after
all input records have been read.
Examples:
Input file "wide.txt":
@ -811,6 +816,13 @@ Examples:
2009-01-03 Y 1.3179287
Input file "long.txt":
time item value
2009-01-01 X 0.65473572
2009-01-01 Y 2.4520609
2009-01-02 X -0.89248112
2009-01-02 Y 0.2154713
2009-01-03 X 0.98012375
2009-01-03 Y 1.3179287
mlr --pprint reshape -s item,value long.txt
time X Y

12
doc/reference.html
View file

@ -2474,9 +2474,14 @@ Wide-to-long options:
-r {input field regexes} -o {key-field name,value-field name}
These pivot/reshape the input data such that the input fields are removed
and separate records are emitted for each key/value pair.
Note: this works with tail -f and produces output records for each input
record seen.
Long-to-wide options:
-s {key-field name,value-field name}
These pivot/reshape the input data to undo the wide-to-long operation.
Note: this does not work with tail -f; it produces output records only after
all input records have been read.
Examples:
Input file "wide.txt":
@ -2504,6 +2509,13 @@ Examples:
2009-01-03 Y 1.3179287
Input file "long.txt":
time item value
2009-01-01 X 0.65473572
2009-01-01 Y 2.4520609
2009-01-02 X -0.89248112
2009-01-02 Y 0.2154713
2009-01-03 X 0.98012375
2009-01-03 Y 1.3179287
mlr --pprint reshape -s item,value long.txt
time X Y