操纵H1标签(Manipulation H1 Tag)

 你有两个选择： 
 
 
 
 使用. 运算符将变量连接成字符串： 
set title "Secondary structure CA IX residues " . first . " to " . lines
 我在"和.之间添加了空格.为了清楚起见，这些将不会在输出中显示。您负责在字符串部分中添加适当的空格。 
 
 
 按预期使用sprintf ： 
set title sprintf("Secondary structure CA IX residues %d to %d", first, lines)
 sprintf的第一个参数是格式字符串，不应包含任何变量。 占位符（例如%d ）用于指示应插入变量的位置。 函数的后续参数是要插入的变量。 由于您的两个变量似乎是整数，因此%d是要使用的相应格式说明符。 
 

You have two options:
 
 
 
Use the . operator to concatenate your variables into strings:
 
set title "Secondary structure CA IX residues " . first . " to " . lines
 
I have added in spaces between the " and . for clarity, these will not be featured in the output. You are responsible for adding in the appropriate spaces in the string sections.
 
 
Use sprintf as it was intended:
 
set title sprintf("Secondary structure CA IX residues %d to %d", first, lines)
 
The first argument to sprintf is a format string, which should not contain any variables. Placeholders (such as %d) are used to indicate the positions that variables should be inserted. Subsequent arguments to the function are the variables to be inserted. As your two variables appear to be integers, %d is the appropriate format specifier to use.