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GIN (GWT INjection) allows you to use Guice in GWT client-side code.

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Text encoding

Specify text encoding with

chd=t:<chart data string>

Where <chart data string> consists of positive floating point numbers from zero (0.0) to 100.0, minus one (-1), and the pipe character (|).

Note:

• Zero (0.0) = 0, 1.0 = 1 and so on up to 100.0 = 100.
• Specify a missing value with minus one (-1).
• If you have more than one set of data, separate each set with a pipe character (|).

For example: chd=t:10.0,58.0,95.0|30.0,8.0,63.0

Note: For text encoding, scale your data by converting it into percentages of the largest value in your data set.

Text encoding with data scaling

Specify text encoding with data scaling with two parameters

chd=t:<chart data string>
chds=<data set 1 minimum value>,<data set 1 maximum value>,<data set n minimum value>,<data set n maximum value>

Where:

• <chart data string> consists of any positive or negative floating point numbers
• <data set 1 minimum value> is the lowest number you want to apply to the first data set
• <data set 1 maximum value> is the highest number you want to apply to the first data set, omit to specify 100
• <data set n minimum value> is the lowest number you want to apply to the nth data set
• <data set n maximum value> is the highest number you want to apply to the nth data set, omit to specify 100

If you supply fewer data scaling parameters than there are data sets the last scaling parameter is applied to the remaining data sets. Provide just one pair of scaling parameters to apply a single range to a chart.

Note:

• This is not available for maps.
• Specify a missing value with a number that is out of range.
• If you have more than one set of data, separate each set with a pipe character (|).

For example: chd=t:30,-60,50,120,80&chds=-80,140

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ㅁ text 타입으로 데이터를 넘길 경우 floating 타입의 0.0 ~ 100.0 과 -1 '|' 로 구성
ㅁ chds 는 범위를 지정하는 듯~?


출처: Google Chart API

Chart size

Specify chart size with chs=<width in pixels>x<height in pixels>

For example, chs=300x200 generates a chart 300 pixels wide and 200 pixels high.

The largest possible area for all charts except maps is 300,000 pixels. As the maximum height or width is 1000 pixels, examples of maximum sizes are 1000x300, 300x1000, 600x500, 500x600, 800x375, and 375x800.

For maps, the maximum size is 440 pixels wide by 220 pixels high.

Pie charts are clipped (only partially visible) if the size specified is too small. General size guidelines for pie charts are:

• a two-dimensional chart needs to be roughly twice as wide as it is high.
• a three-dimensional chart needs to be roughly two and a half times wider than it is high.

chs 파라미터를 통해 width 와 height 픽셀을 지정합니다.

출처: Google Chart API

URL format

Google Chart API URLs must be in the following format:

http://chart.apis.google.com/chart?<parameter 1>&<parameter 2>&<parameter n>

Note: Each URL must be all on one line.

Parameters are separated with the ampersand (&) character. You can specify as many parameters as you like, in any order. For example, the Chart API returns the following chart in response to the URL below:

http://chart.apis.google.com/chart?
chs=250x100
&chd=t:60,40
&cht=p3
&chl=Hello|World

Where:

• http://chart.apis.google.com/chart? is the Chart API's location.
• & separates parameters.
• chs=250x100 is the chart's size in pixels.
• chd=t:60,40 is the chart's data.
• cht=p3 is the chart's type.
• chl=Hello|World is the chart's label.

You can include a Chart API image in an HTML document by embedding a URL within an <img> tag. For example, the following <img> tag results in the same image as above:

<img src="http://chart.apis.google.com/chart?
chs=250x100
&amp;chd=t:60,40
&amp;cht=p3
&amp;chl=Hello|World"
alt="Sample chart" />


기본 URL: http://chart.apis.google.com/chart
  chs: 차트 사이즈. [width]x[height] ex) chs=200x100
  chd: 차트 데이터
  cht: 차트 타입
  chl: 차트 레이블

PNG 타입의 이미지기 때문에 크기는 6 KB 정도밖에 안되네요

출처: Google Chart API

Introduction

The Google Chart API returns a PNG-format image in response to a URL. Several types of image can be generated: line, bar, and pie charts for example. For each image type you can specify attributes such as size, colors, and labels.

You can include a Chart API image in a webpage by embedding a URL within an <img> tag. When the webpage is displayed in a browser the Chart API renders the image within the page.

All the images in this document were generated with the Chart API. To view the URL of an image :

• if you are using Firefox right-click then select View image or Properties.
• if you are using Internet Explorer right-click then select Properties.

This document describes the required format of Chart API URLs and the available parameters.

- 파라미터에 따라 PNG 형식의 이미지 차트를 생성해주는 구글 차트 API

출처: Google Chart API

Google App Engine

We've just released a preview of Google App Engine, an application-hosting tool that developers can use to build scalable web apps on top of Google's computing infrastructure. The goal is to make it easier for web developers to build and scale applications, instead of focusing on system administration and maintenance. In this preview release, accounts are limited to the first 10,000 signups.

이렇다고 하는데... 흠흠

자세한 건 나중에 슬슬 알아보도록 합시다~ ㅋㅋㅋ