Data people must read! This is enough for playing data visualization-AutoNavi's LOCA API 2.0 upgrade is coming!

Introduction

"A picture is worth a thousand words", the era of big data is coming, and data is closely related to people's lives. Complex, difficult, and large-scale data always feel cold, making it difficult for people to obtain key information, nor can they find rules and characteristics, and the value of data can not be displayed. Visualization of spatial data is to solve these problems, restore data with easy-to-understand graphic symbols, express multi-latitude data information, and make your data "live"!

AutoNavi LOCA data visualization aims to provide convenient and efficient visualization application technology for enterprises and individuals in various fields. It provides a large-scale geographic data visualization development framework based on WebGL and AutoNavi JSAPI, which is applied to the field of geospatial data visualization. Combined with AutoNavi’s static basemap, deep customization, rich visualization types, high-performance massive data rendering capabilities, rich case scenarios, and cool expressions are provided to users in a simple and easy-to-use way, so that everyone can enjoy it. Cool geographic data visualization.

one sentence, you can easily display a bunch of boring data on the map in a cool way, and easily generate that arrogant visualization solution!

LOCA data visualization API 2.0 new upgrade

LOCA2.0 not only has a simple and easy-to-use API document, but also a rich selection of scenarios. It has also upgraded more than 90 layer capabilities, including data interaction functions and animation support for points, lines, surfaces, honeycombs, and heat, making the data fresh, easy to understand, and interactive. Technically, the new rendering pipeline and architecture mode are used to greatly improve the data processing capability and data rendering capability.

LOCA 2.0 new features

& Motion

1. Using these colors is both good-looking and can convey data semantics

The basic color matching of LOCA combines the characteristics of data association, distribution trend, characteristic attributes, etc., to finely configure the measurement and psychological perception of color in the data dimension. All cases use highly recognizable, accurate, and credible color matching strategies. includes: classified colors, single and dual-phase continuous colors, divergent colors, and semantic colors. understands and observes the data through the visual channel of color. Users can use the corresponding color scheme according to the LOCA case scene. The visual color scheme of the light map will be provided later.

2. Simple and easy to understand graphical symbols, allowing you to make a visualization that everyone understands

When realizing visual mapping, LOCA adopts the idea of changing graphics variables to define the types of visual variables: shape, size, direction, and color. When mapping data points to graphics, match appropriate data based on the type, order, and numerical characteristics of the data. Visual graphics. As shown in the figure, the visual variables and visual coding used by LOCA.

3. Highly customizable lens, supports multi-data scene switching

Highly customizable lens. How to use the lens language to display the information content in the map scene is particularly important. Therefore, we provide Pitch, Zoom, Rotation, Center four lens-related variables , custom trajectory animation curve ease in, ease out, etc., to achieve the lens parameters Control as you please.

4. Smooth and natural animation effect, so that the data transition is no longer abrupt

More layer feature dynamic effects. supports more than 30 kinds of animation lines, with attributes such as height, radius, transparency, and altitude. has animation transition effects to solve the abrupt problem when layers appear and disappear, and make the transition between data smooth and natural.

5. Multi-light source distribution to enhance scene visual effects

A scene supports multi-point lighting. Multiple light types, multiple light source distribution, can control light intensity, range, color, position, etc., through parameters to control the transition effect of light over time, increases the visual level of scene light and dark illumination.

6. Express AB point pulse and trajectory animation effects, make the data come alive

PulseLine trajectory supports pulse effects. Pulse can control the number, animation duration, line segment width, etc. . Animation direction and speed can transmit data meaning. For example, if the speed is fast, the data line is busy, and if the speed is slow, the data line is busy. The Scatter layer supports dynamic drawing of icons.

Layer Capability & Rendering Performance

1. Three-dimensional space height line and floor ability, restore real space data effect

Three-dimensional space support. Line graphs, heat maps, grid graphs, honeycomb graphs, etc. have all supported the setting of geographic units (meters), and for the line data layer, the altitude of each node can be set to define different vertical distances between nodes. has the ability of three-dimensional height surface to restore the actual floor height and internal structure. can flexibly set the thickness, transparency and color of individual floors and internal surfaces.

2. Personalize and customize unique graphics to make the visualization effect rich and diverse

Data-driven custom visual variable control. The style field supports function callbacks for single data in the layer, and can set unique graphic symbols for each data, and flexibly configure graphic symbol radius, transparency, transparency and other attributes.

3. Data rendering can reach millions of levels, and the efficiency is increased by nearly 10 times

Through the new architecture rendering pipeline, optimize the data processing and style analysis process, give full play to the rendering performance of WebGL, break through the bottleneck of LOCA 1.3 large data volume rendering, has fast data response speed and can easily handle large-scale data sets.

4. Support any combination of multiple layers, real-time observation of

In business scenarios, when observing macro trends, it is usually desirable to see data distribution and values in micro scenarios to assist data analysis and decision-making. LOCA provides dual-layer fusion capability, which can customize the color, size, style and combined transition effect of a single layer. Taking the 3D heat map combined with the point layer as an example, through the lens to control the map to drill down step by step, meets the needs of reading data from global to local visibility.

5. Accurate data pickup to meet the display and interaction of complex scenes

Supports rapid acquisition of massive elements in the drawing, fine-grained control element custom style and independent rendering, mouse over elements will highlight feedback and reveal data information, point, line, area, volume minimum pixel selected after accurate data It reveals to meet the display and interaction of complex scenes.

LOCA business scenario application

The LOCA visualization API is designed to help companies and individuals create spatial data visualization and analysis solutions, which are suitable for many business scenarios. For example: scenarios such as transaction analysis, site selection, traffic index, city health, incident response, research and judgment analysis, and epidemic migration. LOCA 2.0 comprehensively improves the ability to express business scenarios, interprets data in multiple dimensions, and makes business data expression more professional and accurate. It also provides users with a wealth of business scenario demos for reference and use by the majority of users.

Conclusion

As John Tukey said: The greatest value of images is to make us pay attention to unexpected things. Geographical visualization makes the color more warmer, the data more weighted, and the animation more meaningful through the calculation and transformation of the data, making the geospatial data more dynamic. In the future, there will be more and more frontier visualization scenes waiting for us to dig into and study. Relying on AutoNavi Map's LOCA will continue to improve the calculation and expression capabilities of spatial data, enhance the data interaction experience, and let data visualization play a greater role Commercial value, This is also our driving force for continuous progress.

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