GROOVE RADAR: Difference between revisions

Introduced in [[AC DDRMAX|DDRMAX -DanceDanceRevolution 6thMIX-]], the '''GROOVE RADAR''' (グルーヴレーダー) is a graphical representation of a song difficulty using a pentagon shape. Originally meant to be the successor to the traditional Feet/Number Level system, both the Feet/Number Level and GROOVE RADAR have been used since [[AC DDRMAX2|DDRMAX2 -DanceDanceRevolution 7thMIX-]] due to negative reception over the GROOVE RADAR being the only representation of song difficulty. Starting from [[AC DDR 2014|DanceDanceRevolution (2014)]], the GROOVE RADAR numerical values for a chart are always shown on the song select screen. Different values will appear on the GROOVE RADAR depending on the difficulty currently selected for a song. Before [[AC DDR SuperNOVA|DanceDanceRevolution SuperNOVA]], BEGINNER charts had no Groove Radar data at all.

The beatmania IIDX series has a similar feature, the NOTES RADAR, introduced in [[AC HEROIC VERSE|beatmania IIDX 27 HEROIC VERSE]] but with six parameters instead of five.

'''STREAM''' is denoted as the amount of sets of steps that are right after one another (step density) in the song. The song with the highest STREAM values is [[EGOISM 440]], which has Single and Double CHALLENGE charts with STREAM values of 226 and 270, respectively.

# ENDYMION (CHALLENGE): 224

# POSSESSION (20th Anniversary Mix) (CHALLENGE): 223

'''VOLTAGE''' refers to the peak density of the steps of the song. It is the highest density of arrows that appear on the screen at once in one measure (four beats). Charts with sections very densely packed with notes and featuring high average BPMs generally have high VOLTAGE values. The chart with the highest VOLTAGE value is [[ACE FOR ACES]]' Single CHALLENGE, with 260.

To calculate VOLTAGE, find the average BPM of the song first. The average BPM is calculated as:

where Song Length is determined both in beats and in seconds; both are measured from the beginning (usually right when the music starts) all the way to the end (when it says "CLEARED"). Once the average BPM is found, find the Peak Density (the maximum number of notes, including Shock Arrows, if any, that occur in four consecutive beats) and divide by 4 to find the Average Peak Density Per Minute value, which is always an integer number. If a song has no stops or BPM changes, use the song's BPM instead.

* If Average Peak Density Per Minute is equal to or less than 600, VOLTAGE = Average Peak Density Per Minute ÷ 6.

* If Average Peak Density Per Minute is equal to or greater than 600, VOLTAGE = (Average Peak Density Per Minute + 594) × 100 ÷ 1194.

# [[New Generation]] (Single EXPERT): 300 beats in 94.7368 seconds, Peak Density = 12, APD = 570, VOLTAGE = 95.

# [[Blew My Mind]] (Single/Double CHALLENGE): 520 beats in 99.9474 seconds, Peak Density = 23, APD = 1794, VOLTAGE = 200.

** EXPERT: POSSESSION (161)

'''AIR''' refers to the total number of jumps and Shock Arrows in the chart. POSSESSION (20th Anniversary Mix)'s DOUBLE CHALLENGE chart holds the current highest AIR value of 224.

** BASIC: [[MAXX UNLIMITED]]/[[Unreal]] (108)

** EXPERT: 灼熱Beach Side Bunny (122)

** CHALLENGE: POSSESSION (20th Anniversary Mix) (224)

'''FREEZE''' is denoted as the total length of the chart's Freeze Arrows. [[D2R|D2R ("FREEZE" Special)]]'s charts currently have the highest FREEZE value of 200.

# [[CURUS]] (DIFFICULT): 173

'''CHAOS''' refers to the amount of steps that do not match well with the beat of the song. The song [[CHAOS]] is notable for having very high CHAOS values for its charts, with its CHALLENGE charts having the current highest value of 200.

# CHAOS (Double CHALLENGE): Total Chaos Base Value = 4,116 and Total BPM Delta = 7,480 in 87.882 seconds, Unit Chaos Degree = 20,628, CHAOS = 200.

# CHAOS (CHALLENGE): 200

# ACE FOR ACES (CHALLENGE)/ORCA (EXPERT): 188

# ANTI ANTHEM (EXPERT)/CHAOS Terror-Tech Mix (CHALLENGE): 181

** CHALLENGE: CHAOS (200)

** CHALLENGE: CHAOS (200)

* In [[CS DDR SuperNOVA2 NA|DanceDanceRevolution SuperNOVA2 CS (America)]], all charts are shown with a much higher STREAM value on the GROOVE RADAR than they normally would.

[[Category:DDR]]