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Tools for making latex tables in R [closed]
On general request, a community wiki on producing latex tables in R. In this post I'll give an overview of the most commonly used packages and blogs with code for producing latex tables from less straight-forward objects. Please feel free to add any I missed, and/or give tips, hints and little trick...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...it (for example: a foreign library, a file on disc, network data, CPU page tables, ...). In such a case the binary structure of data is also defined in a place inaccessible to the compiler, so reordering the struct fields would create a data type that is inconsistent with the other definitions. For ...
Is it possible to insert multiple rows at a time in an SQLite database?
...t syntax. To make it perfectly clear, the OPs MySQL example:
INSERT INTO 'tablename' ('column1', 'column2') VALUES
('data1', 'data2'),
('data1', 'data2'),
('data1', 'data2'),
('data1', 'data2');
This can be recast into SQLite as:
INSERT INTO 'tablename'
SELECT 'data1' AS 'co...
What columns generally make good indexes?
...portant role in query optimization and searching the results speedily from tables. So it is most important step to select which columns to be indexed. There are two major places where we can consider indexing: columns referenced in the WHERE clause and columns used in JOIN clauses. In short, such co...
access denied for load data infile in MySQL
...mple, this gives the permission problem:
LOAD DATA INFILE '{$file}' INTO TABLE {$table}
Add LOCAL to your statement and the permissions issue should go away. Like so:
LOAD DATA LOCAL INFILE '{$file}' INTO TABLE {$table}
...
Create table in SQLite only if it doesn't exist already
I want to create a table in a SQLite database only if doesn't exist already. Is there any way to do this? I don't want to drop the table if it exists, only create it if it doesn't.
...
How do MySQL indexes work?
...ically, how can they return the data requested without scanning the entire table?
8 Answers
...
How do you change the datatype of a column in SQL Server?
... varchar(50) to a nvarchar(200) . What is the SQL command to alter this table?
8 Answers
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Group by multiple columns in dplyr, using string vector input
...e
df2 <- plyr::ddply(data, columns, plyr::summarize, value=mean(value))
table(df1 == df2, useNA = 'ifany')
## TRUE
## 27
The output from your example question is as expected (see comparison to plyr above and output below):
# A tibble: 9 x 3
# Groups: asihckhdoydkhxiydfgfTgdsx [?]
asihck...
How to convert a table to a data frame
I have a table in R that has str() of this:
5 Answers
5
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