Semantic resizing of line charts

A computing device, comprising:

• a display;
• one or more processors;
• and
• memory coupled to the one or more processors, the memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for:
• generating an initial data visualization according to a visual specification that specifies a data source, a plurality of visual variables, and a plurality of data fields from the data source;
• determining a visualization region based on a display size of the initial data visualization;
• generating a modified data visualization from the initial data visualization according to the determined visualization region, including:
• identifying a plurality of elements of the initial data visualization;
• for each element of the identified plurality of elements, determining a respective semantic weight for the respective element;
• grouping the plurality of elements into one or more element layers according to the determined semantic weights;
• computing one or more spatial metrics for the plurality of elements;
• and
• executing one or more generalization operations on the plurality of elements in accordance with the one or more computed spatial metrics;
• and
• displaying the modified data visualization.

A non-transitory computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform operations comprising:

• generating an initial data visualization according to a visual specification that specifies a data source, a plurality of visual variables, and a plurality of data fields from the data source;
• determining a visualization region based on a display size of the initial data visualization;
• generating a modified data visualization from the initial data visualization according to the determined visualization region, including:
• identifying a plurality of elements of the initial data visualization;
• for each element of the identified plurality of elements, determining a respective semantic weight for the respective element;
• grouping the plurality of elements into one or more element layers according to the determined semantic weights;
• computing one or more spatial metrics for the plurality of elements;
• and
• executing one or more generalization operations on the plurality of elements in accordance with the one or more computed spatial metrics;
• and
• displaying the modified data visualization.