Dipping Sauce for Data Analysis and Visualization

Package dipsaus provides add-ons to various packages such as shiny, rlang, future, etc. to enhance these packages. To install the package,

# To install the development package
# remotes::install_github('dipterix/dipsaus')

# To install from CRAN
install.packages("dipsaus")

dipsaus provides add-ons from the following perspectives:

1. Shiny Customized Widgets (Vignette)

• compoundInput2 assembles any shiny native inputs and create variable-length input;
• actionButtonStyled add styles to shiny default actionButton and its updating function can also update the styles or enable/disable the button;
• sync_shiny_inputs synchronize among shiny inputs without causing dead-locks in UI changes;
• set_shiny_input to set shiny input object;
• flex_div to display elements with flex layout;
• html_asis escapes string so that they will be displayed 'as-is' on websites;
• progress2 shows shiny progress bar, but it also works without shiny;
• shiny_is_running check if shiny is running;

2. Parallel Functions

• collapse is a parallel solution to calculate sum/mean along arrays, providing 4x speed-ups for large arrays;
• make_forked_clusters enables multicore (forked clusters) in future package even in RStudio environment;
• baseline_array to baseline arrays in multicore;
• shift_array to shift arrays along given dimensions;
• lapply_async2 uses future package, but with progress bar either in console or in shiny apps;
• fastcov2 calculates covariance matrices in parallel;
• rs_exec starts a new R session or job in RStudio;

3. R Expressions (Vignette)

• eval_dirty works as base::eval, but supports quosures generated from rlang::quo;
• match_calls match calls in a nested manner, and support changing the call arguments recursively;
• %?<-% assigns default values to left-hand object. E.g. a %?<-% 1 assigns a to be 1 if a is NULL or does not exist;
• %=>% provides JavaScript-style of creating functions;
• new_function2 creates new function with quasi-quotation;
• mask_function2 modifies function and mask certain elements within a function;
• capture_expr captures messages and always return results as one-line string;
• forelse provides Python-like for-else syntax;
• test_farg tests whether function contains desired arguments;

4. Utility Functions (Vignette)

• check_installed_packages, package_installed checks if package(s) are installed;
• col2hexStr convert color to hex strings that are friendly to HTML, CSS and JavaScript;
• parse_svec converts a string into integer vectors, deparse_svec converts integer vectors back into a compact string;
• drop_nulls removes invalid items within lists;
• get_ram, mem_limit2 gets total RAM size as an alternatives for mem.limits in non-windows environment;
• to_ram_size provides simple way to convert numbers to printable storage sizes in given units;
• time_delta calculates time differences and returns a number in given units;
• ask_yesno, ask_or_default interactively ask for user's input either in console or in RStudio;
• fastmap2 and fastqueue2 provides a wrapper of fastmap package, giving the object list-like operations;
• shared_finalizer finalizes multiple elements when last element is garbage collected;
• dev_create allows managing and grouping graphic devices;
• print_directory_tree prints directory and containing files into tree-structures;
• rs_* functions wrapping rstudioapi functions, but work without RStudio;
• sexp_type2 get internal data type code;
• to_datauri converts file to base64 formats.