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= GROOVE RADAR =
= GROOVE RADAR =
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 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.
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.


'''Note:''' The GROOVE RADAR calculations are derived from [[AC DDR 2013|DanceDanceRevolution (2013)]] but are valid for later installments of the DanceDanceRevolution arcade series.
'''Note:''' The GROOVE RADAR calculations are derived from [[AC DDR 2013|DanceDanceRevolution (2013)]] but are valid for later installments of the DanceDanceRevolution arcade series.


== STREAM ==
== STREAM ==
'''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.
'''STREAM''' (全体密度) 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.


It is actually calculated as the average number of steps per minute, calculated as the following:
It is actually calculated as the average number of steps per minute, calculated as the following:
<pre>Average Step Density = 60 × (Steps + Shock Arrows) ÷ Song Length (sec)</pre>
<pre>Average Step Density = 60 × (Steps + Shock Arrows) ÷ Song Length (sec)</pre>
The Average Step Density is the average step density (steps per minute), always rounded down to the nearest whole number.
The Average Step Density is the average number of steps per minute, always rounded down to the nearest whole number. The Song Length is usually determined by the time between the song's beginning (usually right when the music starts) and end (when the "CLEARED" message appears). As of [[AC DDR X|DanceDanceRevolution X]], any Shock Arrows present in the chart will also contribute towards the Average Step Density.
* If Average Step Density is equal to or less than 300, STREAM value = Average Step Density ÷ 3.
* If Average Step Density is equal to or less than 300, STREAM value = Average Step Density ÷ 3.
* If Average Step Density is equal to or greater than 300,
* If Average Step Density is equal to or greater than 300,
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# EGOISM 440 (Single CHALLENGE): 811 notes in 96.545 seconds, Average Step Density = 504, STREAM = 226.
# EGOISM 440 (Single CHALLENGE): 811 notes in 96.545 seconds, Average Step Density = 504, STREAM = 226.
# [[Triple Journey -TAG EDITION-]] (Double CHALLENGE): 712 notes in 102.5 seconds, Average Step Density = 416, STREAM = 199.
# [[Triple Journey -TAG EDITION-]] (Double CHALLENGE): 712 notes in 102.5 seconds, Average Step Density = 416, STREAM = 199.
# [[POSSESSION (20th Anniversary Mix)]] (Double CHALLENGE): 751 notes + 132 Shock Arrows in 118.895 seconds, Average Step Density = 445, STREAM = 223.


; Rankings (Single)
; Rankings (Single)
# EGOISM 440 (CHALLENGE): 226
# EGOISM 440 (CHALLENGE): 226
# [[MAX 360]] (CHALLENGE): 222
# [[MAX 360]] (CHALLENGE): 222
# [[Lachryma(Re:Queen'M)|Lachryma《Re:Queen’M》]] (CHALLENGE): 207
# [[VOLAQUAS]] (CHALLENGE): 202
# [[888]] (CHALLENGE): 200
# [[888]] (CHALLENGE): 200
# [[ENDYMION]] (CHALLENGE): 198
# MAX 360 (EXPERT): 188


; Rankings (Double)
; Rankings (Double)
# EGOISM 440 (CHALLENGE): 270
# EGOISM 440 (CHALLENGE): 270
# MAX 360 (CHALLENGE): 247
# MAX 360 (CHALLENGE): 247
# ENDYMION (CHALLENGE): 224
# Lachryma《Re:Queen’M》 (CHALLENGE): 229
# [[POSSESSION (20th Anniversary Mix)]] (CHALLENGE): 223
# [[ENDYMION]] (CHALLENGE): 224
# [[Lachryma(Re:Queen'M)|Lachryma《Re:Queen’M》]] (EXPERT): 204
# POSSESSION (20th Anniversary Mix) (CHALLENGE) / VOLAQUAS (CHALLENGE): 223
 
; Highest STREAM values per difficulty
* Single
** BEGINNER: EGOISM 440 (54)
** BASIC: MAX 360 (83)
** DIFFICULT: MAX 360 (123)
** EXPERT: MAX 360 (188)
** CHALLENGE: EGOISM 440 (226)
* Double
** BASIC: MAX 360 (81)
** DIFFICULT: MAX 360 (111)
** EXPERT: Lachryma《Re:Queen’M》 (204)
** CHALLENGE: EGOISM 440 (270)


; Scoring
; Scoring
The player's STREAM rating on their MY GROOVE RADAR is added by way of taking the player's score on the chart, dividing it by 1,000,000, then multiplying it by that chart's STREAM value, and dividing it by 10. For example, if the player got a score of 699,300 on [[MAX 300]]'s Single EXPERT chart (which has a STREAM value of 143), their STREAM rating on their MY GROOVE RADAR would reach 100.
The player's STREAM rating on their MY GROOVE RADAR is added by way of taking the player's score on the chart, dividing it by 1,000,000, then multiplying it by that chart's STREAM value, and dividing it by 10. For example, if the player got a score of 699,300 on [[MAX 300]]'s Single EXPERT chart (which has a STREAM value of 143), their STREAM rating on their MY GROOVE RADAR would reach 100. DanceDanceRevolution (2014) was the only game where it was possible for the player to reach a 200 STREAM rating on their MY GROOVE RADAR without needing a Perfect Full Combo on the charts with the highest STREAM values. In this case, the player would need a score of at least 884,960 or 740,750 on EGOISM 440's Single and Double CHALLENGE charts, respectively.


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


To calculate VOLTAGE, find the average BPM of the song first. The average BPM is calculated as:
To calculate VOLTAGE, the first step is to find the average BPM of the song. It is calculated as the following:
<pre>Average BPM = 60 × Song Length (beats) ÷ Song Length (sec)</pre>
<pre>Average BPM = 60 × Song Length (beats) ÷ Song Length (sec)</pre>
where Song Length is determined both in beats and in seconds; both are measured from the beginning 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 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.
The Song Length variable is measured in quarter beats and seconds. Both are measured from the beginning, usually right as soon as the music starts, all the way to the end when it says "CLEARED". Songs that run at very high BPMs for the majority of the song will commonly have a high average BPM. Once the average BPM is found, the next step is to find the Peak Density, which is the maximum number of notes, including Shock Arrows, that occur in four consecutive beats. Take the average BPM of the song (or chart, if it has its own BPM changes and stops), multiply it by the Peak Density (usually a number between 8 and 16), and then divide by 4 to find the Average Peak Density value.
* If Average Peak Density Per Minute is equal to or less than 600, VOLTAGE = Average Peak Density Per Minute ÷ 6.
<pre>Average Peak Density = Average BPM × Peak Density ÷ 4</pre>
* If Average Peak Density Per Minute is equal to or greater than 600, VOLTAGE = (Average Peak Density Per Minute + 594) × 100 ÷ 1194.
Note that the resulting Average Peak Density is rounded down to the nearest integer. If the song/chart in question runs at a constant BPM, use the BPM of the song/chart instead.
* If the Average Peak Density is equal to or less than 600, VOLTAGE = Average Peak Density ÷ 6.
* If the Average Peak Density is equal to or greater than 600, VOLTAGE = (Average Peak Density + 594) × 100 ÷ 1194.


; Examples
; Examples
# [[New Generation]] (Single EXPERT): 300 beats in 94.7368 seconds, Peak Density = 12, APD = 570, VOLTAGE = 95.
# [[Ishtar]] (Single/Double EXPERT):
# [[Blew My Mind]] (Single/Double CHALLENGE): 520 beats in 99.9474 seconds, Peak Density = 23, APD = 1794, VOLTAGE = 200.
#* 276 beats in 106.1538 seconds,
#* Average BPM = 156,
#* Peak Density = 12,
#* Average Peak Density = 468,
#* VOLTAGE = 78.
# [[Blew My Mind]] (Single/Double CHALLENGE)
#* 520 beats in 99.9474 seconds,
#* Average BPM = 312.16,
#* Peak Density = 23,
#* Average Peak Density = 1794,
#* VOLTAGE = 200.


; Rankings (Single)
; Rankings (Single)
# ACE FOR ACES (CHALLENGE): 260
# ACE FOR ACES (CHALLENGE): 260
# Blew My Mind (CHALLENGE): 200
# Blew My Mind (CHALLENGE): 200
# [[Come To m1dy]] (CHALLENGE): 191
# [[Cosy Catastrophe]] (CHALLENGE): 188
# [[Cosy Catastrophe]] (CHALLENGE): 188
# [[London EVOLVED|London EVOLVED ver.A]] (EXPERT/CHALLENGE): 177
# [[London EVOLVED|London EVOLVED ver.A]] (EXPERT/CHALLENGE): 177
# [[POSSESSION]] (EXPERT/CHALLENGE): 161


; Rankings (Double)
; Rankings (Double)
# ACE FOR ACES (CHALLENGE): 247
# ACE FOR ACES (CHALLENGE): 247
# Blew My Mind (CHALLENGE): 200
# Blew My Mind (CHALLENGE): 200
# Come To m1dy (CHALLENGE): 191
# Cosy Catastrophe (CHALLENGE): 188
# Cosy Catastrophe (CHALLENGE): 188
# London EVOLVED ver.A (CHALLENGE): 177
# London EVOLVED ver.A (CHALLENGE): 177
# POSSESSION (EXPERT/CHALLENGE): 161
 
; Highest VOLTAGE values per difficulty
* Single
** BEGINNER: MAX 360 (69)
** BASIC: [[DDR TAGMIX -LAST DanceR-]] (116)
** DIFFICULT: MAX 360 (147)
** EXPERT: London EVOLVED ver.A (177)
** CHALLENGE: ACE FOR ACES (260)
* Double
** BASIC: MAX 360 (112)
** DIFFICULT: [[Pluto Relinquish]] (145)
** EXPERT: [[POSSESSION]] (161)
** CHALLENGE: ACE FOR ACES (247)


; Scoring
; Scoring
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== AIR ==
== AIR ==
'''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.
'''AIR''' (ジャンプ度) 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.


It is calculated similarly to STREAM except only jumps and Shock Arrows are involved:
It is calculated similarly to STREAM except only jumps and Shock Arrows are involved:
<pre>Average Air Density = 60 × (Jumps + Shock Arrows) ÷ Song Length (sec)</pre>
<pre>Average Air Density = 60 × (Jumps + Shock Arrows) ÷ Song Length (sec)</pre>
As with STREAM, Average Air Density is an integer number.
As with STREAM, Average Air Density is an integer number. On Double charts, if a Shock Arrow occurs right next to a jump, both that Shock Arrow and jump count towards AIR.
* If Average Air Density is equal to or less than 55, AIR = Average Air Density × 20 ÷ 11.
* If Average Air Density is equal to or less than 55, AIR = Average Air Density × 20 ÷ 11.
* If Average Air Density is equal to or greater than 55,
* If Average Air Density is equal to or greater than 55,
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; Rankings (Single)
; Rankings (Single)
# Right on time (Ryu☆Remix) (CHALLENGE): 200
# Right on time (Ryu☆Remix) (CHALLENGE): 200
# [[WARNINGxWARNINGxWARNING|WARNING×WARNING×WARNING]] (CHALLENGE): 169
# [[Prey]] (CHALLENGE): 167
# [[TWINKLE HEART|TWINKLE♡HEART]] (CHALLENGE): 165
# [[TWINKLE HEART|TWINKLE♡HEART]] (CHALLENGE): 165
# [[DYNAMITE RAVE|DYNAMITE RAVE("AIR" Special)]] (CHALLENGE): 159
# [[Firestorm]] (CHALLENGE): 162
# POSSESSION (20th Anniversary Mix) (CHALLENGE): 152
# [[Summer fantasy (Darwin remix)]] (CHALLENGE): 142


; Rankings (Double)
; Rankings (Double)
# POSSESSION (20th Anniversary Mix): 224
# [[MEGALOVANIA]] (CHALLENGE): 245
# POSSESSION (20th Anniversary Mix) (CHALLENGE): 224
# Right on time (Ryu☆Remix) (CHALLENGE): 200
# Right on time (Ryu☆Remix) (CHALLENGE): 200
# MEGALOVANIA (EXPERT): 198
# [[Youkoso Japari Park e|ようこそジャパリパークへ]] (CHALLENGE): 195
# [[Youkoso Japari Park e|ようこそジャパリパークへ]] (CHALLENGE): 195
# TWINKLE♡HEART (CHALLENGE): 162
 
# DYNAMITE RAVE("AIR" Special): 160
; Highest AIR values per difficulty
* Single
** BEGINNER: [[DXY!]] (60)
** BASIC: [[MAXX UNLIMITED]] / [[Unreal]] (108)
** DIFFICULT: Unreal (132)
** EXPERT: [[Shakunetsu Beach Side Bunny|灼熱Beach Side Bunny]] (128)
** CHALLENGE: Right on time (Ryu☆Remix) (200)
* Double
** BASIC: Unreal (113)
** DIFFICULT: [[TRIP MACHINE PhoeniX]] (110)
** EXPERT: MEGALOVANIA (198)
** CHALLENGE: MEGALOVANIA (245)


; Scoring
; Scoring
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== FREEZE ==
== FREEZE ==
'''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.
'''FREEZE''' (踏みっぱ度) 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.


It is calculated as:
It is calculated as:
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; Examples
; Examples
# [[Chinese Snowy Dance]] (Single BASIC): 85.0 total FA length in 300 beats, FA Rate = 2833, FREEZE = 80.
# [[Chinese Snowy Dance]] (Single BASIC): 85.0 total FA length in 300 beats, FA Rate = 2833, FREEZE = 80.
# D2R("FREEZE" Special) (Single CHALLENGE): 239.0 total FA length in 252 beats, FA Rate = 9,484, FREEZE = 200.
# D2R ("FREEZE" Special) (Single CHALLENGE): 239.0 total FA length in 252 beats, FA Rate = 9,484, FREEZE = 200.
# [[DoLL]] (Double DIFFICULT): 137.75 total FA length in 316 beats, FA Rate = 4,359, FREEZE = 114.
# [[DoLL]] (Double DIFFICULT): 137.75 total FA length in 316 beats, FA Rate = 4,359, FREEZE = 114.


; Rankings (Single)
; Rankings (Single)
# D2R("FREEZE" Special) (CHALLENGE): 200
# D2R ("FREEZE" Special) (CHALLENGE): 200
# [[CURUS]] (DIFFICULT): 173
# [[CURUS]] (DIFFICULT) / [[Draw the Savage]] (CHALLENGE): 173
# [[in love wit you]] (EXPERT): 168
# [[in love wit you]] (EXPERT): 168
# [[Freeze]] (DIFFICULT): 146
# [[Freeze]] (DIFFICULT): 146
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; Rankings (Double)
; Rankings (Double)
# D2R("FREEZE" Special) (CHALLENGE): 200
# D2R ("FREEZE" Special) (CHALLENGE): 200
# in love wit you (EXPERT): 183
# in love wit you (EXPERT): 183
# in love wit you (DIFFICULT): 156
# in love wit you (DIFFICULT): 156
# Freeze (DIFFICULT): 144
# Freeze (DIFFICULT): 144
# Freeze (BASIC): 128
# Freeze (BASIC): 128
; Highest FREEZE values per difficulty
* Single
** BEGINNER: [[STULTI]] (78)
** BASIC: Freeze (143)
** DIFFICULT: CURUS (173)
** EXPERT: in love wit you (168)
** CHALLENGE: D2R ("FREEZE" Special) (200)
* Double
** BASIC: Freeze (128)
** DIFFICULT: in love wit you (156)
** EXPERT: in love wit you (183)
** CHALLENGE: D2R ("FREEZE" Special) (200)


; Scoring
; Scoring
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== CHAOS ==
== CHAOS ==
'''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''' (変則度) refers to the amount of steps that do not match well with the beat of the song. The song with the highest CHAOS value is BREAKING THE FUTURE, which has Single and Double CHALLENGE charts with CHAOS values of 211 and 218, respectively.  


In practice, it is determined by multiple factors.
In practice, it is determined by multiple factors.
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* Note Quantization: 4th, 8th, 12th, 16th, 24th, 32nd, 48th, or 64th.
* Note Quantization: 4th, 8th, 12th, 16th, 24th, 32nd, 48th, or 64th.
* Interval from Last Note: How far this note is from the previous one, based on its Note Quantization.
* Interval from Last Note: How far this note is from the previous one, based on its Note Quantization.
* Note Color Value: The color of the note as viewed with the [[DDR AC General Info#ARROW COLOR|NOTE]] ARROW COLOR option. Red (4th) notes have a value of 0, blue (8th) notes have a value of 0.5, yellow (16th) notes are always 1, and green (12th, 24th, 32nd, etc.) notes are 1.25.
* Note Color Value: The color of the note as viewed with the [[DDR AC General Info#ARROW COLOR|NOTE]] ARROW COLOR option. Red (4th) notes have a value of 0, blue (8th) notes have a value of 0.5, yellow (16th) notes are 1, and green (12th, 24th, 32nd, etc.) notes are 1.25.
* Number of Arrows: A single note yields 1, a jump yields 2, and a Shock Arrow yields 4 or 8.
* Number of Arrows: A single note yields 1, a jump yields 2, and a Shock Arrow yields 4 or 8. On Double charts, a single note occurring concurrently with a four-lane Shock Arrow yields 5 while a jump occurring concurrently with a four-lane Shock Arrow yields 6.
* '''Note: The first note's Chaos Base Value is always 0.'''
* '''Note: The first note's Chaos Base Value is always 0 regardless of its color.'''
: '''Example:''' [[Valkyrie dimension]] (Single CHALLENGE), with 4,456.16.
: '''Example:''' [[Valkyrie dimension]] (Single CHALLENGE), with 4,456.16.


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Valkyrie dimension has an Average BPM Delta of 4,170.468624.
Valkyrie dimension has an Average BPM Delta of 4,170.468624.


The fourth factor determining CHAOS is the Irregularity Degree, calculated as:
The fourth factor determining CHAOS is the Chaos Degree, calculated as:
<pre>Total Chaos Base Value × (1 + (Average BPM Delta ÷ 1,500))</pre>
<pre>Total Chaos Base Value × (1 + (Average BPM Delta ÷ 1,500))</pre>
Valkyrie dimension's Single CHALLENGE chart has an Irregularity Degree of 16,846.
Valkyrie dimension's Single CHALLENGE chart has a Chaos Degree of 16,846.


The fifth and final factor determining CHAOS is the Unit Irregularity Degree, calculated in integer form as:
The fifth and final factor determining CHAOS is the Unit Chaos Degree, calculated in integer form as:
<pre>Unit Irregularity Degree × 100 ÷ Song Length (sec)</pre>
<pre>Chaos Degree × 100 ÷ Song Length (sec)</pre>
* If the Unit Irregularity Degree is equal to or less than 2,000, CHAOS = Unit Irregularity Degree ÷ 20.
* If the Unit Chaos Degree is equal to or less than 2,000, CHAOS = Unit Chaos Degree ÷ 20.
* If the Unit Irregularity Degree is equal to or greater than 2,000,
* If the Unit Chaos Degree is equal to or greater than 2,000,
** and the play style is Single, CHAOS = (Unit Irregularity Degree + 21,605) × 100 ÷ 23,605;
** and the play style is Single, CHAOS = (Unit Chaos Degree + 21,605) × 100 ÷ 23,605;
** or the play style is Double, CHAOS = (Unit Irregularity Degree + 16,628) × 100 ÷ 18,628.
** or the play style is Double, CHAOS = (Unit Chaos Degree + 16,628) × 100 ÷ 18,628.


; Examples
; Examples
# [[Fascination MAXX]] (Single BASIC): Total Chaos Base Value = 547.99359 and Total BPM Delta = 3,500 in 101.225 seconds, Unit Irregularity Degree = 1,290, CHAOS = 64.
# [[Fascination MAXX]] (Single BASIC): Total Chaos Base Value = 547.99359 and Total BPM Delta = 3,500 in 101.225 seconds, Unit Chaos Degree = 1,290, CHAOS = 64.
# Valkyrie dimension (Single CHALLENGE): CHAOS = 153.
# Valkyrie dimension (Single CHALLENGE): CHAOS = 153.
# CHAOS (Double CHALLENGE): Total Chaos Base Value = 4,116 and Total BPM Delta = 7,480 in 87.882 seconds, Unit Irregularity Degree = 20,628, CHAOS = 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.


; Rankings (Single)
; Rankings (Single)
# CHAOS (CHALLENGE): 200
# BREAKING THE FUTURE (CHALLENGE): 211
# [[CHAOS]] (CHALLENGE): 200
# [[ANTI ANTHEM]] (EXPERT): 199
# ACE FOR ACES (CHALLENGE): 175
# ACE FOR ACES (CHALLENGE): 175
# [[ORCA]] (EXPERT): 172
# [[ORCA]] (EXPERT): 172
# [[CHAOS Terror-Tech Mix]] (CHALLENGE): 169
# CHAOS (EXPERT): 164


; Rankings (Double)
; Rankings (Double)
# BREAKING THE FUTURE (CHALLENGE): 218
# CHAOS (CHALLENGE): 200
# CHAOS (CHALLENGE): 200
# ACE FOR ACES (CHALLENGE)/ORCA (EXPERT): 188
# ACE FOR ACES (CHALLENGE) / ORCA (EXPERT): 188
# CHAOS Terror-Tech Mix (CHALLENGE): 181
# ANTI ANTHEM (EXPERT) / [[CHAOS Terror-Tech Mix]] (CHALLENGE): 181
# CHAOS (EXPERT): 177
# CHAOS (EXPERT): 177
# [[Over The "Period"|Over The “Period”]] (CHALLENGE): 161
 
; Highest CHAOS values per difficulty
* Single
** BEGINNER: ORCA (63)
** BASIC: CHAOS (115)
** DIFFICULT: CHAOS (134)
** EXPERT: ANTI ANTHEM (199)
** CHALLENGE: BREAKING THE FUTURE (211)
* Double
** BASIC: CHAOS (117)
** DIFFICULT: CHAOS (142)
** EXPERT: ORCA (188)
** CHALLENGE: BREAKING THE FUTURE (218)


; Scoring
; Scoring
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== MY GROOVE RADAR ==
== MY GROOVE RADAR ==
MY GROOVE RADAR (マイグルーヴレーダー) is the player's own GROOVE RADAR that rates them based on their mastery of the five aspects of the GROOVE RADAR. It starts at 0 for all five parameters and increases as the player plays and completes songs. The values increase by 10% of the calculated fulfilled GROOVE RADAR values for the chart (e.g. if a player scores a MAX COMBO of 508 on POSSESSION's Single EXPERT chart, which has a VOLTAGE value of 161, the player's MY GROOVE RADAR VOLTAGE rating will increase by 13, rounded down from 15% of 134). To advance their MY GROOVE RADAR past 100, the player must achieve 100 on all five aspects first.
MY GROOVE RADAR (マイグルーヴレーダー), introduced in [[AC DDR SuperNOVA2|DanceDanceRevolution SuperNOVA2]], is the player's own GROOVE RADAR that rates them based on their mastery of the five aspects of the GROOVE RADAR. It starts at 0 for all five parameters and increases as the player plays and completes songs. The values increase by 10% of the calculated fulfilled GROOVE RADAR values for the chart (e.g. if a player scores a MAX COMBO of 508 on POSSESSION's Single EXPERT chart, which has a VOLTAGE value of 161, the player's MY GROOVE RADAR VOLTAGE rating will increase by 13, rounded down from 15% of 134). To advance their MY GROOVE RADAR past 100, the player must achieve 100 on all five aspects first.


This feature was discontinued in [[AC DDR A|DanceDanceRevolution A]].
This feature was discontinued in [[AC DDR A|DanceDanceRevolution A]].


[[Category:DDR]]
== Calculation in older games ==
Since the introduction of the MY GROOVE RADAR feature in DanceDanceRevolution SuperNOVA2, various charts that have more than 100 in any aspect of the GROOVE RADAR have had their ratings in said aspect(s) lowered several times due to the introduction of various songs that have greater parameters than them. This is because prior to DanceDanceRevolution (2014), any new chart that was deemed to go over 200 in any aspect of the GROOVE RADAR with previous GROOVE RADAR parameter calculation formulas resulted in said formulas being adjusted to make that chart reach 200. The following section details what each of the resulting parameters must be for each aspect of the GROOVE RADAR to reach 200 in games before DanceDanceRevolution (2013).
 
; DanceDanceRevolution SuperNOVA2 &rarr; DanceDanceRevolution X
* STREAM: Average Step Density must be 396 (387 on Double) for the STREAM value to be 200. [[Fascination MAXX]]'s Single CHALLENGE and [[PARANOIA survivor MAX]]'s Double CHALLENGE charts each had the highest STREAM rating of 200 between DanceDanceRevolution SuperNOVA2 and X.
* VOLTAGE: Average Peak Density Per Minute must be 1,302 for the VOLTAGE value to be 200. [[PARANOiA ~HADES~|PARANOiA ～HADES～]]'s CHALLENGE charts both had the highest VOLTAGE rating of 200 before [[AC DDR X2|DanceDanceRevolution X2]].
* AIR: Average Air Density must be 109 for the AIR value to be 200. DYNAMITE RAVE ("AIR" Special)'s CHALLENGE charts had an AIR rating of 200 before the introduction of TWINKLE♡HEART's CHALLENGE charts in [[AC DDR X3|DanceDanceRevolution X3 VS 2ndMIX]].
* FREEZE: FA Rate must be 9,484 (9,246 on Double) for the FREEZE value to be 200. D2R ("FREEZE" Special)'s CHALLENGE charts have remained the charts with the highest FREEZE rating of 200 since their introduction.
* CHAOS: Unit Chaos Degree must be 25,605 (20,628 on Double) for the CHAOS value to be 200. CHAOS' CHALLENGE charts have remained the charts with the highest CHAOS rating of 200 since their introduction.
 
; DanceDanceRevolution X2
* STREAM: Average Step Density must be 461 (417 on Double) for the STREAM value to be 200. 888's CHALLENGE charts became the charts with the highest STREAM rating of 200 until EGOISM 440's CHALLENGE charts were introduced in DanceDanceRevolution (2014).
* VOLTAGE: Average Peak Density Per Minute must be 1,329 for the VOLTAGE value to be 200. POSSESSION's EXPERT and CHALLENGE charts became the charts with 200 VOLTAGE.
* AIR: Remained unchanged until X3 VS 2ndMIX.
* FREEZE: Has remained unchanged from SuperNOVA2.
* CHAOS: Has remained unchanged from SuperNOVA2.
 
; DanceDanceRevolution X3 VS 2ndMIX
* VOLTAGE: Average Peak Density Per Minute must be 1,530 for the VOLTAGE value to be 200. London EVOLVED ver.A's CHALLENGE and Single EXPERT charts had 200 VOLTAGE in their introduction in X3 VS 2ndMIX.
* AIR: Average Air Density must be 115 (111 on Double) for the AIR value to be 200. TWINKLE♡HEART's CHALLENGE charts had 200 AIR when introduced in X3 VS 2ndMIX.
 
== Trivia ==
* In [[CS DDR SuperNOVA2 NA|DanceDanceRevolution SuperNOVA2 CS (North America)]], all charts are shown with a much higher STREAM value on the GROOVE RADAR than they normally would.
* Three other BEMANI games also have a similar feature, albeit with six parameters instead of five:
** GuitarFreaks & Drummania (pre-XG): Radar Chart, introduced in [[AC GFDM V3|GuitarFreaks V3 & DrumMania V3]].
** beatmania IIDX: NOTES RADAR, introduced in [[AC HEROIC VERSE|beatmania IIDX 27 HEROIC VERSE]].
** SOUND VOLTEX: EFFECT RADAR, introduced in [[AC SDVX EG|SOUND VOLTEX EXCEED GEAR]].
 
[[Category:DanceDanceRevolution]]
[[Category:Terminology]]
[[Category:Terminology]]
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