Squirrel do more_with_less_code_cheat_sheet_1
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The document describes various methods for loading, transforming, filtering, slicing, dicing, and visualizing data in a table format. Some key capabilities include loading data from files in formats like CSV, ARFF, HTML tables, and DataTables. It also describes methods for filtering rows, aggregating values, splitting and merging tables, sampling data, and generating basic charts and tables for visualization.
Squirrel do more_with_less_code_cheat_sheet_1
- 1. LoadCSV Loads a CSV file LoadFixedLength Loads file with fixed length fields LoadARFF Loads ARFF (WEKA supported file format)file LoadHTMLTable Loads a HTML table LoadDataTable Loads a ADO.NET DataTable LoadFlatFile Loads a flat file given list of delimiters LoadTSV Loads tab (‘t’) separated values PrettyDump Dumps the data beautifully to Console ToTable Generates a table from a list of tuples ToHTMLTable Generates a HTML table from internal table ToDataTable Generates a ADO.NET DataTable ToARFF Generates a ARFF notation from the table ExtractOutliers Extracts the outliers for the given column RemoveOutliers Removes outliers in-place Distinct Removes duplicate rows by calculating hash key RemoveIfBetween Removes if values are between given values RemoveIfNotBetween Removes if values are not between given values RemoveMatches Removes if values match a given regular expression RemoveNonMatches Removes if values don’t match a given regular expression RemoveIfBefore Removes if the dates are before the given date RemoveIfAfter Removes if the dates are after the given date RemoveIfBetween Removes if the dates are between given dates RemoveIfNotAnyOf Removes if values are not any of the given values RemoveIfAnyOf Removes if the values are any of the given values RemoveLessThan Removes if values are less than the given value RemoveLessThanOrEqualTo Removes if values are less or equal than the given value RemoveGreaterThan Removes if the values are greater than the given value. RemoveGreaterThanOrEqualTo Removes if the values are greater or equal than the given value RemoveIf<T> Removes if the given predicate for T matches. RemoveIfNot<T> Removes if the given predicate for T doesn’t match. Filter Filters out the given column for given values FilterByRegex Filters out given column by the given regex RunSQLQuery Runs SQL (standard) on the table SortBy Sorts the table by the given column SortInThisOrder Sorts the table as per a given list for a given column. ModifyColumnName Changes column name. ValuesOf Returns all values of the given column ValuesOf<T> Returns all values of the given column casting to T. AddRow Adds a new rows given the row as a dictionary ExtractAndAddAsColumn Extracts elements and add them in a different column provided the regex and column name. TranformCurrencyToNumeric Identifies and removes currency symbols to make them numeric so that sorting works as expected. AddColumn Adds a new column given the values and column name CumulativeFold Folds a column cumulatively given a scheme CumulativeSum Folds a column cumulatively to generate running sum Transform Data Cleansing Data Acquisition Filtering and Slicing/Dicing
- 2. Transform Transforms values of a column by a rule Histogram Generates histogram for a given column SplitOn Splits the table based on values of the given column MergeByColumns Merges two tables based on the column that has common values automagically Merge Merges two tables and keeps the keeps the duplicate rows by default Exclusive Finds rows that are exclusively available on a single table but not on the second one Common Finds common rows from two tables IsSubset Checks whether a table is a subset of another table or not MergeColumns Merges multiple columns to a single column provided the scheme of merge and the new column name Drop Drops mentioned column names Pick Picks only the mentioned columns in the given order RandomSample Generates a new table with random sample Top Takes top N rows Bottom Takes bottom N rows TopNPercent Takes top N % rows BottomNPercent Takes bottom N % rows Middle Takes N rows from the middle SplitByRows Generates multiple tables by splitting all the rows as per the given row count per table SplitByColumns Generates multiple tables by taking specified number of columns for each table. Shuffle Randomly shuffles the table in-place RoundOffTo Rounds off each numeric column to the given digits count. Has an overload that allows specific precision for each column. Aggregate Flattens a table by a scheme applied for all numeric columns for each rows horizontally. AggregateColumns Flattens a table by a scheme applied for all the numeric columns vertically. Filtering and Slicing/Dicing AddRows Add new rows given a formula as string and a precision for decimal digits AddRowsByShortHand Adds new rows by shorthand. Internally calls AddRows after expanding the shorthand notation. Supports programming short hand notations like +=, -=, *=, /=, ++ and -- AddColumn Adds a new column given a formula and a precision for decimal digits Programmatic Data Generation ToBasicBootstrapHTMLTable Generates a basic bootstrap table. The default bootstrap table class is striped. ToBootstrapHTMLTableWithColoredRows Generates a bootstrap table with colored rows. You can specify a predicate for each different classes of rows, “info”, “error”, “danger” and “success”. ToPieByGoogleDataVisualization Generates a pie chart from the table using Google data visualization API and the given column. Changing an enum, this method can be used to generate Pie,Donut and 3D Pie chart. ToBarChartByGoogleDataVisualization Generates a bar chart using google visualization API and a given column. Data Visualization Adapters