Systems and methods to display chart bars with variable scaling and/or aggregation

A computer readable medium having stored therein instructions executable by a processor, wherein the instructions are executable to:

• receive market data related to a tradeable object offered at an exchange;
• aggregate a first data subset of the market data for a first period;
• aggregate a second data subset of the market data for a second period, the second period represents a period of time different from and before the first period;
• aggregate a third data subset of the market data for a third period, the third period represents a period of time different from the first period and the second period, and wherein the third period is before the second period;
• define a first bar based on the first data subset and a first bar-width;
• define a second bar based on the second data subset and a second bar-width, wherein the second bar-width is related to the first bar-width based on a width-scaling factor, and wherein the second bar-width is based on the width-scaling factor applied to the first bar-width and is narrower than the first bar-width;
• define a third bar based on the third data subset and a third bar-width, wherein the third bar-width is related to the second bar-width based on the width-scaling factor, and wherein the third bar-width is scaled based on the width-scaling factor applied to the second bar-width and is narrower than the second bar-width;
• display the first bar and the second bar in a window, wherein the first bar and the second bar are separated by a first bar-spacing;
• display the third bar in the window in relation to the second bar, wherein the second bar and the third bar are separated by a second bar-spacing that is different than the first bar-spacing, wherein the second bar-spacing is related to the first bar-spacing based on a spatial-scaling factor, wherein the second bar-spacing is based on the spatial-scaling factor applied to the first bar-spacing and is less than the first bar-spacing;
• detect a user-input control overlapping with the second bar;
• in response to the user-input control, display a second window in relation to the second bar;
• define a fourth bar based on the second data subset and the first bar-width;
• and
• display the fourth bar in the second window.