Share
VIDEOS 1 TO 50
Create a Radar Chart
Create a Radar Chart
Published: 2013/03/30
Channel: Doug H
DATA INTERPRETATION (RADAR CHART) set 7,part 10
DATA INTERPRETATION (RADAR CHART) set 7,part 10
Published: 2016/06/27
Channel: Study Virus
How to create a Radar Chart (also known as Polar and Kiviat Chart)
How to create a Radar Chart (also known as Polar and Kiviat Chart)
Published: 2013/07/08
Channel: Oisin Cawley
Problem Solving Techniques #15: Radar Charts
Problem Solving Techniques #15: Radar Charts
Published: 2010/08/23
Channel: Eugene O'Loughlin
Radar Charts in Excel 2016
Radar Charts in Excel 2016
Published: 2016/07/13
Channel: Excel Maven
How to Read A Radar Chart
How to Read A Radar Chart
Published: 2015/08/03
Channel: The Complete Guide to Everything
ChartJS Tutorials #7 - Radar Charts in ChartJS
ChartJS Tutorials #7 - Radar Charts in ChartJS
Published: 2016/08/12
Channel: LevelUpTuts
How-to Color Radar Chart Rings in Excel
How-to Color Radar Chart Rings in Excel
Published: 2012/04/23
Channel: exceldashboards
Bullet journal radar chart for tracking wellness
Bullet journal radar chart for tracking wellness
Published: 2016/02/21
Channel: Heather Lovelady
How to Create Monthly Radar Charts in Tableau
How to Create Monthly Radar Charts in Tableau
Published: 2016/05/17
Channel: Andy Kriebel
Radar chart
Radar chart
Published: 2014/11/14
Channel: Audiopedia
Radar Charts
Radar Charts
Published: 2015/02/20
Channel: Timothy Chester
The Spider Chart
The Spider Chart
Published: 2013/07/30
Channel: UCSB EFP
Radar and Area Charts (General 2 DS4)
Radar and Area Charts (General 2 DS4)
Published: 2015/02/02
Channel: mathspays
Radar Charts Collection
Radar Charts Collection
Published: 2013/07/24
Channel: PoweredTemplate.com
Tutorial on How to Create a Spider/ Radar Chart with Background Image in Tableau
Tutorial on How to Create a Spider/ Radar Chart with Background Image in Tableau
Published: 2016/09/16
Channel: Story by Data
Power BI Custom Visuals - Radar Chart
Power BI Custom Visuals - Radar Chart
Published: 2016/06/23
Channel: Pragmatic Works
How to insert a radar chart
How to insert a radar chart
Published: 2009/08/25
Channel: MHELP2U
Using Radar Charts as a Perceptual Map
Using Radar Charts as a Perceptual Map
Published: 2015/05/08
Channel: MktgStudyGuide
Create a Spider Chart
Create a Spider Chart
Published: 2014/09/29
Channel: cutedraw
Using the MantisX - Screen 1 - Spider Chart
Using the MantisX - Screen 1 - Spider Chart
Published: 2016/11/15
Channel: MantisX
Creating Pivot Tables, Motion, Radar & Sparklines Charts in Google Sheets
Creating Pivot Tables, Motion, Radar & Sparklines Charts in Google Sheets
Published: 2016/08/09
Channel: Natalie Profita
DS2   WE1   Radar Charts
DS2 WE1 Radar Charts
Published: 2014/11/30
Channel: Russell Player
Graphing: Origin 8.6: Radar Chart
Graphing: Origin 8.6: Radar Chart
Published: 2011/11/08
Channel: OriginLab Corp.
Data Interpretation Shortcuts based on Pie + Radar Chart for  Bank PO | In Hindi Part 11
Data Interpretation Shortcuts based on Pie + Radar Chart for Bank PO | In Hindi Part 11
Published: 2016/10/13
Channel: Study Smart
IBPS PO - RADAR DI (Expected Topic) Part -1
IBPS PO - RADAR DI (Expected Topic) Part -1
Published: 2016/10/11
Channel: Current Affairs Funda (Aptitude & LR )
How to Create a Radar - Spider Chart in Excel 2007, 2010, 2013 using EZ Chart - Tutorial
How to Create a Radar - Spider Chart in Excel 2007, 2010, 2013 using EZ Chart - Tutorial
Published: 2013/02/04
Channel: EZChartXL
Radar Charts in Excel 2013
Radar Charts in Excel 2013
Published: 2013/09/02
Channel: Chester Tugwell
QlikView Tutorial | QlikView Charts | How to create Radar Chart in QlikView
QlikView Tutorial | QlikView Charts | How to create Radar Chart in QlikView
Published: 2013/09/17
Channel: Data & Tools
Radar Chart Flex and Air data visualization: Demo
Radar Chart Flex and Air data visualization: Demo
Published: 2009/10/27
Channel: KAP IT SAS
Barbs does Radar Charts from the 2008 HSC
Barbs does Radar Charts from the 2008 HSC
Published: 2016/07/31
Channel: mathswithbarbs
EAF#30 - Excel Radar Chart for Athlete Profile
EAF#30 - Excel Radar Chart for Athlete Profile
Published: 2012/09/23
Channel: ExcelTricksforSports
Microsoft Excel: How to create a radar graph
Microsoft Excel: How to create a radar graph
Published: 2016/05/13
Channel: GEO-HACKS
Chart 10 Radar chart
Chart 10 Radar chart
Published: 2015/11/05
Channel: Neeraj Kaushik
Expression-driven Radar Chart
Expression-driven Radar Chart
Published: 2015/04/28
Channel: Riad Gasimov
How-to Remove The Zero Point or Make a Hole in an Excel Radar Chart
How-to Remove The Zero Point or Make a Hole in an Excel Radar Chart
Published: 2013/01/17
Channel: exceldashboards
Set Spider Chart Options
Set Spider Chart Options
Published: 2013/11/04
Channel: cutedraw
Radar Chart Flex and Air component: Quick Start
Radar Chart Flex and Air component: Quick Start
Published: 2009/10/27
Channel: KAP IT SAS
Custom Your Data Driven XY Scatter and Radar Charts in PowerPoint Graphs Pack
Custom Your Data Driven XY Scatter and Radar Charts in PowerPoint Graphs Pack
Published: 2016/04/20
Channel: Presentation Process
Example Radar Chart created in excel
Example Radar Chart created in excel
Published: 2009/03/21
Channel: valuestreamguru
Lowrance HDS-12,4g radar, chart, with point-1 calibrated properly
Lowrance HDS-12,4g radar, chart, with point-1 calibrated properly
Published: 2013/05/20
Channel: Lee Brown
Data Driven Radar Charts
Data Driven Radar Charts
Published: 2013/07/24
Channel: PoweredTemplate.com
How to Overlay your Chart with Radar SIMRAD Evo2 NSS NSO -Mike Smedley -Team Old School
How to Overlay your Chart with Radar SIMRAD Evo2 NSS NSO -Mike Smedley -Team Old School
Published: 2015/07/28
Channel: Mike Smedley
📊 Excel Basic - thá»±c hĂ nh Radar (Spider) Chart BĂ i 9
📊 Excel Basic - thá»±c hĂ nh Radar (Spider) Chart BĂ i 9
Published: 2016/09/07
Channel: Thanh Pham Ngoc
Excel-2007-Graphs-Radar-Charts
Excel-2007-Graphs-Radar-Charts
Published: 2013/03/03
Channel: AuditExcel Advanced Excel and Financial Model Training and Consulting
Cara Membuat Radar Chart Berdasarkan Kriteria Warna
Cara Membuat Radar Chart Berdasarkan Kriteria Warna
Published: 2017/04/26
Channel: Kusuka.Excel
Spider Chart or Radar Chart described
Spider Chart or Radar Chart described
Published: 2017/06/10
Channel: Vijay Perepa
How to Create Filled Radar Chart in Excel 2013
How to Create Filled Radar Chart in Excel 2013
Published: 2016/09/06
Channel: Excel (A-Z)
Radar Chart - Excel
Radar Chart - Excel
Published: 2015/06/06
Channel: Pavlina Atanasova
Android Bar Chart, Radar Chart using MYSQL PHP Volley JSON
Android Bar Chart, Radar Chart using MYSQL PHP Volley JSON
Published: 2017/05/01
Channel: Freebies Learning
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Example star plot from NASA, with some of the most desirable design results represented in the center.
This spider chart represents the allocated budget versus actual spending for a given organization.

A radar chart is a graphical method of displaying multivariate data in the form of a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point. The relative position and angle of the axes is typically uninformative.

The radar chart is also known as web chart, spider chart, star chart,[1] star plot, cobweb chart, irregular polygon, polar chart, or Kiviat diagram.[2][3] It is equivalent to a parallel coordinates plot in polar coordinates.

Overview[edit]

The radar chart is a chart and/or plot that consists of a sequence of equi-angular spokes, called radii, with each spoke representing one of the variables. The data length of a spoke is proportional to the magnitude of the variable for the data point relative to the maximum magnitude of the variable across all data points. A line is drawn connecting the data values for each spoke. This gives the plot a star-like appearance and the origin of one of the popular names for this plot. The star plot can be used to answer the following questions:[4]

  • Which observations are most similar, i.e., are there clusters of observations? (Radar charts are used to examine the relative values for a single data point (e.g., point 3 is large for variables 2 and 4, small for variables 1, 3, 5, and 6) and to locate similar points or dissimilar points.)[4]
  • Are there outliers?

Radar charts are a useful way to display multivariate observations with an arbitrary number of variables.[5] Each star represents a single observation. Typically, radar charts are generated in a multi-plot format with many stars on each page and each star representing one observation.[4] The star plot was first used by Georg von Mayr in 1877.[6][7] Radar charts differ from glyph plots in that all variables are used to construct the plotted star figure. There is no separation into foreground and background variables. Instead, the star-shaped figures are usually arranged in a rectangular array on the page. It is somewhat easier to see patterns in the data if the observations are arranged in some non-arbitrary order (if the variables are assigned to the rays of the star in some meaningful order).[8]

Applications[edit]

One application of radar charts is the control of quality improvement to display the performance metrics of any ongoing program.[9]

They are also used in sports to chart players' strengths and weaknesses, where they are usually called spider charts.[10]

Limitations[edit]

Radar charts are primarily suited for strikingly showing outliers and commonality, or when one chart is greater in every variable than another, and primarily used for ordinal measurements – where each variable corresponds to "better" in some respect, and all variables on the same scale.

Conversely, radar charts have been criticized as poorly suited for making trade-off decisions – when one chart is greater than another on some variables, but less on others.[11]

Further, it is hard to visually compare lengths of different spokes, because radial distances are hard to judge, though concentric circles help as grid lines. Instead, one may use a simple line graph, particularly for time series.[12]

Artificial structure[edit]

Radar charts impose several structures on data, which are often artificial:

  • Relatedness of neighbors – radar charts are often used when neighboring variables are unrelated, creating spurious connections.
  • Cyclic structure – the first and last variables are placed next to each other.
  • Length – variables are often most naturally ordinal: better or worse, though the degree of difference may be artificial.
  • Area – area scales as the square of values, exaggerating the effect of large numbers. For example, 2, 2 takes up 4 times the area of 1, 1. This is a general issue with area graphs, and area is hard to judge – see "Cleveland's hierarchy".[13]

For example, the alternating data 9, 1, 9, 1, 9, 1 yields a spiking radar chart (which goes in and out), while reordering the data as 9, 9, 9, 1, 1, 1 instead yields two distinct wedges (sectors).

In some cases there is a natural structure, and radar charts can be well-suited. For example, for diagrams of data that vary over a 24-hour cycle, the hourly data is naturally related to its neighbor, and has a cyclic structure, so it can naturally be displayed as a radar chart.[12][14][15]

One set of guidelines on the use of radar charts (or rather the closely related "polar area graph") is:[15]

  • you don't mind reading stacked areas instead of position along a common scale (see Cleveland's Hierarchy),
  • the data set is truly cyclic, not linear, and
  • there are two series to compare, one much smaller than the other

Data set size[edit]

Radar charts are helpful for small-to-moderate-sized multivariate data sets. Their primary weakness is that their effectiveness is limited to data sets with less than a few hundred points. After that, they tend to be overwhelming.[4]

Example[edit]

Star plots of 16 cars.
Detail for the star plot of the Cadillac Seville.

The chart on the right[4] contains the star plots of 15 cars. The variable list for the sample star plot is:

  1. Price
  2. Mileage (MPG)
  3. 1978 Repair Record (1 = Worst, 5 = Best)
  4. 1977 Repair Record (1 = Worst, 5 = Best)
  5. Headroom
  6. Rear Seat Room
  7. Trunk Space
  8. Weight
  9. Length

We can look at these plots individually or we can use them to identify clusters of cars with similar features. For example, we can look at the star plot of the Cadillac Seville (the last one on the image) and see that it is one of the most expensive cars, gets below average (but not among the worst) gas mileage, has an average repair record, and has average-to-above-average roominess and size. We can then compare the Cadillac models (the last three plots) with the AMC models (the first three plots). This comparison shows distinct patterns. The AMC models tend to be inexpensive, have below average gas mileage, and are small in both height and weight and in roominess. The Cadillac models are expensive, have poor gas mileage, and are large in both size and roominess.[4]

Alternatives[edit]

Most simply, one may use a simple line graph, particularly for time series.[12]

For graphical qualitative comparison of 2-dimensional tabular data in several variables, a common alternative are Harvey Balls, which are used extensively by Consumer Reports.[16] Comparison in Harvey Balls (and radar charts) may be significantly aided by ordering the variables algorithmically to add order.[17]

An excellent way for visualising structures within multivariate data is offered by principal component analysis (PCA).

Another alternative is to use small, inline bar charts, which may be compared to sparklines.[17]

Although radar and polar charts are often described as the same chart types,[3] some sources make a difference between them and even consider the radar chart to be a polar chart's variation that does not display data in terms of polar coordinate.[18]

See also[edit]

References[edit]

 This article incorporates public domain material from the National Institute of Standards and Technology website http://www.nist.gov.

  1. ^ Nancy R. Tague (2005) The quality toolbox. page 437.
  2. ^ Star Plots - Statistical Graphics for Multivariate Data
  3. ^ a b "Find Content Gaps Using Radar Charts". Content Strategy Workshops. March 3, 2015. Retrieved December 17, 2015. 
  4. ^ a b c d e f NIST/SEMATECH (2003). Star Plot in: e-Handbook of Statistical Methods. 6/01/2003 (Date created)
  5. ^ Chambers, John, William Cleveland, Beat Kleiner, and Paul Tukey, (1983). Graphical Methods for Data Analysis. Wadsworth. pp. 158-162
  6. ^ Mayr, Georg von (1877), Die GesetzmĂ€ĂŸigkeit im Gesellschaftsleben (in German), Munich: Oldenbourg , p.78. Linien-Diagramme im Kreise: Line charts in circles.
  7. ^ Michael Friendly (2008). "Milestones in the history of thematic cartography, statistical graphics, and data visualization".
  8. ^ Michael Friendly (1991). "Statistical Graphics for Multivariate Data". Paper presented at the SAS SUGI 16 Conference, Apr, 1991.
  9. ^ Ron Basu (2004). Implementing Quality: A Practical Guide to Tools and Techniques. p.131.
  10. ^ Spider Graphs: Charting Basketball Statistics
  11. ^ You are NOT spider man, so why do you use radar charts?, by Chandoo, September 18th, 2008
  12. ^ a b c Peltier, Jon (2008-08-14). "Rock Around The Clock - Peltier Tech Blog". Peltiertech.com. Retrieved 2013-09-11. 
  13. ^ (Cleveland 1984), summarized at http://processtrends.com/toc_data_visualization.htm Archived March 25, 2010, at the Wayback Machine.
  14. ^ "Charting around the clock The Excel Charts Blog". Excelcharts.com. 2008-08-15. Retrieved 2013-09-11. 
  15. ^ a b Clock This
  16. ^ "Qualitative Comparison". Support Analytics Blog. 11 December 2007. Archived from the original on 2012-04-08. 
  17. ^ a b "Information Ocean: Reorderable tables II: Bertin versus the Spiders". I-ocean.blogspot.com. 2008-09-24. Retrieved 2013-09-11. 
  18. ^ "Polar Charts (Report Builder and SSRS)". Microsoft Developer Network. Retrieved December 17, 2015. 

External links[edit]

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license