Re: [Gnuplot-info] Design of Experiment Data Plotting

[chuckh <crh...@ya...>]

I appreciate the suggestion.

I definitely get a more accurate graph with the data:

This is what the graph looks like now:

I'm wondering how to get a better transition between colors on the pm3d
function. Do you see how it is seperated into 4 quadrants with solid color
in each. 

What function would help with this?

Thomas Sefzick wrote:
> 
> you are using 'dgrid3d' for mapping the data to a grid
> (but you already have your data in grid format).
> if you really want this functionality then you should
> adjust the number of rows and columns to the data:
> 
> set dgrid3d 3 3
> 
> 
> chuckh wrote:
>> 
>> Hi there,
>> 
>> I'm hoping someone can help me as I've read so much information and
>> haven't found out what I am doing wrong.
>> 
>> Basically I am using a welding technology to develop a process for a
>> medical customer. The welding process uses two main input parameters
>> (Force and time). The customer is looking for a strong and aesthetically
>> pleasing product. The higher the time and force the stronger the result
>> is but the worse the aesthetic quality becomes. I'm looking to 3d plot
>> the two input parameters and the result of the strength test (pull force
>> value) and aesthetic quality (subjective 0-10 rating).
>> 
>> Example script looks something like the following using gnuplot 4.4 patch
>> 3:
>> 
>> #Force vs. Time vs. Strength
>> set xlabel "Force"
>> set ylabel "Time"
>> set zlabel "Strength"
>> set pm3d
>> set dgrid3d
>> set contour
>> set grid
>> splot 'XXXXX.dat' with lines
>> 
>> # XXXXX.dat file looks like the following:
>> #left: force   middle: time   right: strength
>> 50	0.01	100
>> 50	0.01	102.12
>> 50	0.01	98.55
>> 50	0.011	109.43
>> 50	0.011	111.21
>> 50	0.011	113.12
>> 50	0.012	121.9
>> 50	0.012	119.14
>> 50	0.012	120.19
>> 		
>> 46	0.01	98.11
>> 46	0.01	96.59
>> 46	0.01	95.12
>> 46	0.011	104.11
>> 46	0.011	103.98
>> 46	0.011	105.21
>> 46	0.012	115.78
>> 46	0.012	113.21
>> 46	0.012	117.21
>> 		
>> 48	0.01	99.12
>> 48	0.01	98.99
>> 48	0.01	100.1
>> 48	0.011	108.11
>> 48	0.011	107.66
>> 48	0.011	109.11
>> 48	0.012	118.11
>> 48	0.012	119.21
>> 48	0.012	120.09
>> 
>> The problem I'm seeing is that the graph looks like this:
>>  http://old.nabble.com/file/p31291642/example.png 
>> 
>> You see how the corners look like "horns". I would expect or should say
>> want to have the graph roll more like a ramp. i.e. ramp up towards a
>> higher time value and ramp down towards a lower time value.
>> 
>> Can anyone point out some tips on how to resolve this? Thanks
>> 
> 
> 
http://old.nabble.com/file/p31295507/example2.png 
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