A method for generating a data structure, the data structure being used to generate a symbol representative of changes in price during a time period, the method includes receiving, for each intra-time period of a plurality of intra-time periods in the time period, intra-time price data including an intra-time open price, an intra-time high price, an intra-time low price, and an intra-time close price corresponding to the intra-time period, determining, from the received intra-time price data for the plurality of intra-time periods, an open price, which is an intra-time open price of an initial intra-time period of the plurality of intra-time periods, a highest price, which is an intra-time high price of a first intra-time period of the plurality of intra-time periods, a lowest price, which is an intra-time low price of a second intra-time period of the plurality of intra-time periods, and a close price, which is an intra-time close price of a last intra-time period of the plurality of intra-time periods, determining, from the intra-time high price of each of the plurality of intra-time periods, a total-higher-high-price counter value, determining, from the intra-time close price of each of the plurality of intra-time periods compared to the open price, a total-above-open-price counter value, and storing the time period, the open price, the highest price, the lowest price, the close price, the total-higher-high-price-counter value, and the total-above-open-price counter value in association with one another in the data structure on a non-transitory computer readable medium.