Hello,
Trying to create an N1.85 graph in Excel that has irregular spaced tick marks on the X-axis. Found the following information but no luck with it. Need US measure for this semi-log (10 X N1.85) graph. Also called a semi-expo (Q1.85) graph.
The resulting graph appears to be a log graph in reverse with one scale; the column widths are smaller at the left and become larger as they progress to the right. Any help is appreciated.
Thanks.
Info found:
A 1.85 graph can be constructed manually by establishing a series of 15 values (in the case of the example in D5.2.1) from a base measurement to the exponent of 1.85.
Step 1
Select a base measurement for the desired size of the graph. A base measurement of 1.0 mm will produce a graph to 15 which is approximately 150 mm wide; a base measurement of 1.5 mm will produce a graph approximately 300 mm wide. In the case of a 1 mm base measurement, the x-axis numbers will be the 1–15 series. In the case of a base of 1.5 mm, the numbers will be represented by the series: 1.5, 3.0, 4.5, 6.0 etc. for 15 values.
Step 2
Construct a series of columns to the 1.85 exponent values measured from the zero point. The rows representing the pressure values are linear.
NOTE – A good approximation of the above can be computer-generated by a spreadsheet programme by entering a column width established from the exponential figures by subtracting the preceding value in each case. The column dimensions are displayed in the number of standard characters able to be accommodated in the column width which is slightly inaccurate in linear dimension.
The figures below indicate the values for a graph based on 1.0 mm.
Linear scale Exponential value of linear values = Column width =
linear values to 1.85 power exponential value – preceding value
1 1 1
2 3.61 2.61
3 7.63 4.03
4 13.00 5.36
5 19.64 6.64
6 27.52 7.88
7 36.60 9.08
8 46.85 10.25
9 58.26 11.41
10 70.79 12.54
11 84.45 13.65
12 99.19 14.75
13 115.03 15.83
14 131.93 16.90
15 149.89 17.96
Trying to create an N1.85 graph in Excel that has irregular spaced tick marks on the X-axis. Found the following information but no luck with it. Need US measure for this semi-log (10 X N1.85) graph. Also called a semi-expo (Q1.85) graph.
The resulting graph appears to be a log graph in reverse with one scale; the column widths are smaller at the left and become larger as they progress to the right. Any help is appreciated.
Thanks.
Info found:
A 1.85 graph can be constructed manually by establishing a series of 15 values (in the case of the example in D5.2.1) from a base measurement to the exponent of 1.85.
Step 1
Select a base measurement for the desired size of the graph. A base measurement of 1.0 mm will produce a graph to 15 which is approximately 150 mm wide; a base measurement of 1.5 mm will produce a graph approximately 300 mm wide. In the case of a 1 mm base measurement, the x-axis numbers will be the 1–15 series. In the case of a base of 1.5 mm, the numbers will be represented by the series: 1.5, 3.0, 4.5, 6.0 etc. for 15 values.
Step 2
Construct a series of columns to the 1.85 exponent values measured from the zero point. The rows representing the pressure values are linear.
NOTE – A good approximation of the above can be computer-generated by a spreadsheet programme by entering a column width established from the exponential figures by subtracting the preceding value in each case. The column dimensions are displayed in the number of standard characters able to be accommodated in the column width which is slightly inaccurate in linear dimension.
The figures below indicate the values for a graph based on 1.0 mm.
Linear scale Exponential value of linear values = Column width =
linear values to 1.85 power exponential value – preceding value
1 1 1
2 3.61 2.61
3 7.63 4.03
4 13.00 5.36
5 19.64 6.64
6 27.52 7.88
7 36.60 9.08
8 46.85 10.25
9 58.26 11.41
10 70.79 12.54
11 84.45 13.65
12 99.19 14.75
13 115.03 15.83
14 131.93 16.90
15 149.89 17.96
