As we all know, the human left brain is responsible for processing text and logic-related matters, and the human right brain is responsible for processing image and art-related matters.
is characterized by slow processing speed in the left brain and extremely fast processing speed in the right brain; and when the human brain processes information, it uses two channels of vision and text. This is why people love to pursue visualization , because the human brain processes images much faster than texts, that is, it is often said that a picture is worth a thousand words.
But most people face the challenge that we recognize the necessity of data visualization, but lack professional skills in data visualization. Part of the reason can be attributed to the fact that data visualization is just data analysis In one aspect of the process, data analysts may spend their energy on acquiring data, cleaning and sorting out data, analyzing data, and building models, but they cannot do well in the final presentation and communication.
At the same time, the choice of visualization type is neither purely aesthetic nor completely personal. An inappropriate solution may be boring or incomprehensible to the audience, and may even create a barrier of trust with the audience.
Today Xiaoyi will talk to you about data visualization, and is there a unified standard for visualization? How do large companies visualize data?
1. What data visualization?
Data visualization is a series of methods that visualize relatively complex and abstract data in a form that is easier for people to understand. Data visualization is to more vividly express the internal information and laws of data, and promote the dissemination and application of data information.
With the support of the current new technology, data visualization is not only "visual", but also communicable and interactive. The essence of is to convey information, that is, how to make information accurate, reliable, and easy to understand Convey to the other party.
And large-screen data visualization is a data visualization design with large screens as the main display carrier, and it is also a popular application in the current visualization field. It can usually be divided into Class , Data analysis class and Monitoring warning class . There are two main points in the data visualization large screen: one is the cool display effect, and the other is the hierarchical relationship between the display data. A good data visualization large screen is a comprehensive application of layout, color, charts, and dynamic effects.
2. Principles of data visualization
Data visualization is a form of information exchange.It depicts dense and complex information in graphical form, and the final visual effect is designed to simplify the data and use the data to help users make decisions. At the same time, data visualization can represent data of different types and sizes, from a few data points to large multivariate data sets. In general, follow the following principles:
1. Accuracy
data visualization needs to consider the accuracy, clarity and completeness of the data. Present information in an undistorted manner, reducing users' thinking costs.
2. Practicality
Emphasizes that data needs to be practical and can help users use contextual and comparative data that emphasizes exploration and comparison of data for early warning. , Browse the data.
3. Adaptability
can adapt to multiple devices and multiple spans. The visualization can be adjusted according to the size of different devices, while predicting the user's needs for data depth, complexity and modalities.
3. Classification of data visualization
Data visualization can be represented in different forms.Charts are a common way to express data because they describe different data types and can be used for data comparison, exploration, etc. Deciding on the type of chart to use mainly depends on two things: the data to be communicated and the content of the data to be communicated. Below we will introduce the various types of charts.
1. Comparison class
The difference between the display and the value visualization method. Use the length, width, position, area and color of the graph to compare the size of the value. It is usually used to show the comparison of values between asynchronous categories and the comparison of data at different time points.
method of visualizing
2. proportion based on the relationship between the proportion of the display same dimension
3. Interval class
The visualization method shows the difference between the upper and lower limits of the value on the same dimension.Use the size and position of the graph to indicate the upper and lower limits of the value, which is usually used to indicate the maximum and minimum values of the data in a certain category (point in time).
, Usually used to indicate the order of data.
5. Trends
span1 visual trend analysis of span data changes. The position of the graph is used to show the distribution of the data on the continuous area, and usually shows the law of the size of the data on the continuous area.
6. Time type _p5span
It usually shows the law of the size of the data in a continuous area.
Geographical location, usually to show the distribution of data in different geographic areas.
Fourth, data visualization, large-screen design process
1. carding business needs
screen design to Avoid displaying for the sake of display. Typesetting, layout, chart selection, etc. should serve the business. Therefore, the large-screen design is carried out on the basis of a full understanding of business needs. So what are business requirements? The business requirement is the problem to be solved or the goal to be achieved. Designers help related personnel to achieve this goal by means of design, which is the value of large-screen data visualization.
2. Extract key indicators based on business scenarios
Key indicators are some general words,It is a collective term for a group or series of data. Under normal circumstances, an indicator occupies an area on the large screen, so through the definition of key indicators, we know what content will be displayed on the large screen and the large screen will be divided into several blocks, as shown in the figure, after determining the key indicators , According to business needs, draw up the priority of each indicator display (primary, secondary, auxiliary).
(1) Main indicators are located in the center of the screen, mostly dynamic maps or flops _p5 The indicators on both sides of the screen are mostly various charts
(3) Auxiliary: supplementary information of the main indicators can be displayed on the secondary screen or by the mouse _p5brp
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br37 3. Establish the dimension of indicator analysis
The data of the same indicator can have different results when analyzed from different dimensions. After completing the visual design, many small partners found that the visual graphics did not accurately express their intentions, nor could they convey the necessary information to the viewers. The visual graphics were confusing or incomprehensible. To a large extent, this happens because the dimensions of the analysis are not accurately identified or the definition is confusing.
4. Select the visualization chart type
When the analysis dimensions are determined,In fact, the chart types we can choose are basically determined. Next, we only need to filter out the one that best reflects our design intent from a few charts. Note for selected charts: is easy to understand and can be realized ;
(1) easy to understand _p5span _span1 _span1 strong _span1 strong visualization of the final screen design should be considered for users It should be easy to understand at a glance, without thinking and over-understanding. Therefore, when choosing a chart, you should be rational and avoid choosing some graphics that are not user-friendly for visual effects.
(2) We need to know the span data, whether we can contact the existing data, and so on. Corresponding visual performance;
5. Understand the physical large screen, determine the size of the design draft
signal source that is the resolution of most large screen designs submitted by the computer The resolution of the screen.When there are multiple signal sources , there will be multiple design drafts. At this time, the size of each design draft corresponds to the resolution of the signal source computer screen.
In general, the resolution of the design draft is the resolution of the computer. When there are multiple signal sources, the computer screen resolution is sometimes customized by the graphics card to make the computer display resolution It is not equal to its physical resolution. At this time, the resolution of the corresponding design draft becomes the resolution after setting; in addition, when the aspect ratio of the projected computer resolution is inconsistent with the physical aspect ratio of the large screen (single signal Source), it will also make custom adjustments to the screen resolution of the projected computer. In this case, the resolution of the design draft will also change.
6. Page layout and division
1span After the size of the design is established, the layout of the page is then divided. The division here is mainly based on the business indicators we have set before. The core business indicators are arranged in the middle and occupy a large area; the rest of the indicators are expanded around the core indicators in order of priority. Generally, related indicators are placed adjacent or close together, and indicators of similar chart types are put together, which can reduce the cognitive burden on viewers and improve the efficiency of information transmission.
7. Visual design
The visual design of the selected span
span
At present, large-screen visualization mainly includes two types of visualization data: indicator information points and geographic information points. The visualization effect of index information points is relatively simple and easy to implement, while the visualization effect of geographic information points is generally cool, but the development is relatively difficult, and it requires more communication between the designer and the development.
Geographical information generally has a strong sense of space, rich particles, dynamic effects such as streamers, high-precision models and materials, and interactive real-time calculations. There will be requirements for the performance of the hardware equipment. If the hardware configuration is not enough, it may be stuck or even crash. Therefore, this point also needs to be communicated and evaluated in advance.
8. Page finalization and development
Actually, the page development stage does not mean that the front-end style is actually implemented. The preparation of the upper and back-end data has already begun after the analysis indicators have been defined, and our current work is to connect the data to the front-end, and then present it in a designed style.
9. Overall detail tuning and testing
This part refers to the actual page development and optimization after the completion of the large screen.There are mainly two parts of work here:
(1) Visual test: Whether the key visual elements, font size, page dynamics, graphics and charts are displayed as expected, whether they are deformed, misplaced, etc. Condition.
(2) Performance and data test: Whether the graphics and chart animation are smooth, whether the data is loaded and refreshed are abnormal; whether the page is displayed for a long time, such as crashing, stuck, etc.; background control Whether the system can normally switch the front-end page display.
Five or 7 kinds of large screen design and layout introduction
strong41span strong_ strong_strong1span1.
①layout points: left, middle and right.The middle is the main indicator, which occupies a larger area of the page; the left and right sides are the secondary indicators, which are smaller in area and more concentrated, showing a large number of indicators. For data analysis and display of industries such as education, real estate, government affairs, etc., it is necessary to display multiple indicators and highlight certain key indicators. Clearly
(2) Left and right layout
strong span3
_p5span strong span_strong
44 Display a large number of indicators
②Application scenarios: is often used for map display and 3D model display to expand key areas. Such as smart parks, smart factories, smart cities, etc.
can show more image areas,More stereoscopic three-dimensional model
2. large screen
(1) uniformly layout
①Layout key points: distributes the display area of each block evenly according to 1:1:1
②Application scenarios: is often used to display 3span _span strong span1 ③span strong span1 ③span _span strong span1 _span1 strong span1 Advantages: When indicators with no obvious primary and secondary distinction need to be displayed, divide the area without too much visual interference, and apply
(2) Story layout_ span3span
①layout points: no obvious segmentation area _1span3span rong41strong ②Application scenarios: is often used to tell a completed story line
③Advantages: has strong data consistency,When there is a correlation between the indicators, it can be logically displayed
(3) Monarch layout
strong span1 img_span1 span1 strong span1
strong span1 img1 is large in the middle and small on both sides. The middle is the main indicator, which occupies a large area of the page, usually placed in a large three-dimensional image; the left and right are secondary indicators, the area is small, more concentrated, showing more indicators
②Application scenarios: Need to display multiple indicators, and highlight certain key indicators or three-dimensional images applicable
③Advantages: images are larger and clearer and three-dimensional, and the indicators have a distinct primary and secondary
_p37 3. Because of the opposite sex screen(1) Vertical layout
_strongspan strong span_strongspan1
_strongspan strong span_strongspan1
Divide the page into upper, middle and lower parts. The middle area is larger, and the upper and lower parts are smaller. Focus on the middle area. ③Advantages: is well adapted to screens in special scenes, with distinct primary and secondary, highlighting the key points
img img _span0 pstrong4p img _span5 pstrong41sp5 img _span0
①Layout points: The layout is more random, the full screen is full of various indicators, display as much as possible
②Daily application scenarios: Operation and maintenance personnel use
③Advantages: display indicators are many and comprehensive
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In addition, some people must be curious about how the cool big screens in the layouts described above are made. Here, Xiaoyi recommends this easy-to-use data visualization platform- cool screen .
cool screen is a new generation of data visualization product independently developed by Yixin Huachen , which can flexibly and quickly create various interactive conventional screens and large screen visualizations, with more than 100 kinds of cool components and 3D built-in Special effects make the data "jump on the screen" and get a more vivid and intuitive visual presentation.
For design and layout, an important advantage of Cool Screen is that it can really reach the realm of how far the design can go and how far it can be displayed. It is convenient for development and implementation personnel to quickly complete the page requirements and finally get a good display. Any type of page effect and layout that users want to achieve can be quickly produced and realized using Cool Screen Analysis.
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