While we work on something interactive and web-based, you can download the package yourself and give it a try.
The following is a step by step tutorial to help you along the way.

Recently we have been incorporating our research work built on top of handwriter so that you may also use those.
See the Research Pipelines section for more.

Things you'll need:

The R software environment, downloadable from
The R Project.
You may use this mirror from Iowa State if you wish.

RStudio Desktop, an IDE that should simplify the experience.

A sample of handwriting in .png format, you can:

Write something up (black and white works best) and scan it digitally.

Use an online tool like
Sketch.io
create and export some handwriting easily.

processHandwriting() will return tons of information about the document. It is worth exploring, and we've provided a handy list here of what each element of the list means

On a document level:

nodes | A list of all 'points of interest'

connectingNodes | A list of all nodes where graphs connect

terminalNodes | A list of all nodes where a path in a graphs ends

breakPoints | A list of calculated points to break graphs apart (based on connectingNodes)

As well as a letterList for each letter/graph that includes:

path | A list of all points

nodes | A list of all 'points of interest'

allPaths | A list of lists of calculated 'paths'

adjMatrix | Adjacency matrix

letterCode | A unique letter code

connectingNodes | A list of all nodes where the graph connects

terminalNodes | A list of all nodes where a path in the graph ends

characterFeatures | A list of all 'points of interest' in the document

aspect_ratio | Height to width ratio

height | Height of the graph, measured in pixels

width | Width of the graph, measured in pixels

topmost_row | The top-most row, as its y coordinate

bottom_row | The bottom-most row, as its y coordinate

leftmost_col | The left-most column, as its x coordinate

rightmost_col | The left-most column, as its x coordinate

centroid_index | The centroid of the graph, as its index

centroid_y | The y coordinate of the centroid

centroid_x | The x coordinate of the centroid

centroid_horiz_location |

centroid_vert_location |

lHalf | List of all points on the left half of the graph

rHalf | List of all points on the right half of the graph

disjoint_centroids | The centroids of the left and right halves, as their idicies

slope | The slope of the graph as it runs through the centroid

pixel_density |

box_density |

uniqueid | A unique numerical identifier for the graph

down_dist | Distance from the lowest point of a graph to the next graph, measured in pixels

line_number | The position of the graph in the line

order_within_line | The ordered within the line the graph falls in

l_neighbor_dist | Distance from the left-most point in the graph to its left neighbor, measured in pixels

r_neighbor_dist | Distance from the right-most point in the graph to its left neighbor, measured in pixels

xvar | Variance of X, used to calculate the covariance in covar

yvar | Variance of Y, used to calculate the covariance in covar

covar | Covarience of the graph

wordIndex | Word number the graph belongs to

Exploring processed writing

Using the information returned from processHandwriting(), Handwriter allows plotting on a letter (or graph), word, sentence, or the entire document.

Make sure to save this information so that the plotting functions work correctly

Also included is the ability to plot individual graphs from the sample of writing, using
plotLetter(). First lets look at the parameters and options, and then run through a few examples.

The parameters include:

letterList Object

The index of the graph you wish to plot

dims Object

OPTIONAL: Boolean - Number the paths within the graph

OPTIONAL: Boolean - Plot the centroid of the graph

OPTIONAL: Boolean - Plot the slope of the graph

The following will result in the first graph being plotted with all optional paramters:

plotLetter(csafe_processList$letterlist, 1, dims)
#Note: No optional parameters specified is the same as:
#plotLetter(csafe_processlist$letterList, 1, dims, TRUE, TRUE, TRUE)

This will plot the fifth graph with just the slope and centroid: