这篇“iTOL怎么为进化树外层添加圆环”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“iTOL怎么为进化树外层添加圆环”文章吧。
首先准备好进化树。
然后准备注释文件，其格式如下：
DATASET_COLORSTRIP #lines starting with a hash are comments and ignored during parsing #select the separator which is used to delimit the data below (TAB,SPACE or COMMA).This separator must be used throught this file (except in the SEPARATOR line, which uses space). #SEPARATOR TAB SEPARATOR SPACE #SEPARATOR COMMA #label is used in the legend table (can be changed later) DATASET_LABEL color_strip2 #dataset color (can be changed later) COLOR #ff0000 #optional settings #all other optional settings can be set or changed later in the web interface (under 'Datasets' tab) #maximum width STRIP_WIDTH 25 #left margin, used to increase/decrease the spacing to the next dataset. Can be negative, causing datasets to overlap. MARGIN 0 #border width; if set above 0, a black border of specified width (in pixels) will be drawn around the color strip BORDER_WIDTH 1 BORDER_COLOR #000 #show internal values; if set, values associated to internal nodes will be displayed even if these nodes are not collapsed. It could cause overlapping in the dataset display. SHOW_INTERNAL 0 #In colored strip charts, each ID is associated to a color. Color can be specified in hexadecimal, RGB or RGBA notation #Internal tree nodes can be specified using IDs directly, or using the 'last common ancestor' method described in iTOL help pages #Actual data follows after the "DATA" keyword DATA #ID1 value1 #ID2 value2 160232 #efff22 COL#efff22 13773 #efff22 COL#efff22 56636 #efff22 COL#efff22 111955 #efff22 COL#efff22 2287 #efff22 COL#efff22 50339 #efff22 COL#efff22 2303 #efff22 COL#efff22 2234 #efff22 COL#efff22
DATA之前的部分都是格式声明，照抄即可。之后就是添加圆环数据，数据分两列，第一列为原始标签，第二列是圆环对应颜色，之间以Ta空格分隔。准备好数据后就可以加到进化树中了。
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