Copy tab-delimited data from a spreadsheet and paste below,
then press "Initial auto-Plot". Click buttons to see data examples. ↗   
    y = R + L - R ( 1 + ( x k ) S ) s E         












y axis:



















° °
☍
 /


fit
no fit


legend
no legend
x axis:








y1 y2 y3 y4 y5 y6 y7 y8 y9 y10 y11 y12
rgb:
mrkr:
size:
line:
width:

INSTRUCTIONS

rgb:  Marker and line colors are the same for each series. Change the series color by changing the rgb (red,gree,blue) numbers, each ranging from 0 to 255. Note: 0,0,0 is black 255,255,255 is white

mrkr:  Enter different numbers for different marker shapes, e.g. (0●) (100○) (1■) (101□) (17★) (117☆) (5▲) (105△)

(2◆) (102◇) (6▼) (106▽). To see a complete list check out this link and scroll down to "Mouse over symbols for name & number!".

size:  size of markers

line:  0 - continuous line. 1 and above - dashed lines.

width:  line width

y1 y2 y3 y4 y5 y6 y7 y8 y9 y10 y11 y12
L:
R:
k:
S:
E:
∑Δ2

















     y = R + L - R ( 1 + ( x k ) S ) s E

INSTRUCTIONS

Automatic curve fitting and plotting:If you press the "Initial auto-Plot" button the program will automatically fit and plot the data, and populate the table above with the calculated (L,R,k,S,E) parameters plus the sum of the squared residuals ∑Δ2.

Manual adjustments:If you press the "Replot" buttons the program will not calculate new L,R,k,S,E parameters. Instead, it will use the parameters that are currently on the table. You can manually change those parameters and press "Adjust & re-Plot" or "replot" to see how your changes altered the curves as well as the adjusted ∑Δ2.

Semi-automatic adjustments:Uncheck one or more of the L,R,k,S,E parameters and press the "fit" button to have the program automatically do the curve fitting changing only the parameters that are checked. Then press "replot". For example, you can un-check L and R and manually set those paraters to 0 and 3. Then, press "fit" and see how all the other parameters were automatically calculated while L and R remained at 0 and 3. Finally press "replot" to actualy see the plot. If you want the semi-automatic adjustements to affect only some of the data series, simply unckeck the series that you want to leave alone.