[MORPHMET] Using photographs from distinct sources to GM analyses

2016-03-12 Thread Pablo Fisichella
Dear Morphometricians

I am new in geometric morphometrics. I have a question perhaps quite simple
with regards to 2D GM. I am comparing the size/shape of human skulls from
different sources using photographs taken in norma lateralis. One part was
obtained through a standardized protocol while the other part was obtained
from published pictures (with permissions) which were obtained using
different protocols. I have traditional measurements for each skull for the
published data set in order to compute the centroid size. However, taking
into account some theoretical issues I feel that such comparison may be
biased especially regarding size (i.e. CS) because both sets of images were
obtained using different distances between the camera and the target. In
order to minimize the size bias I plan to digitize landmarks and
semilandmarks only along the skull contour given that its shape can be
optimally characterized using a 2D approach. The location of landmarks in
other structures poorly characterized from the 2D approach (i.e distinct to
the contour) would increase the size bias. I will do a procrustes analysis
using both data sets and through a multivariate regression of size on the
procustes coordinates I will obtain residuals (i.e. shape variables). To my
knowledge using this approach I will minimize the size bias mentioned.
Obviously I will not use the centroid size in any subsequent analysis, only
the shape variables. Does anyone tell me if this approach is right? Some
suggestions?
thanks in advance

cheers
Pablo


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[MORPHMET] Dating morphological divergence

2016-07-01 Thread Pablo Fisichella
Dear all

I have an inquiry perhaps trivial!!. I want to know if there exist a
technique/method to date evolutionary divergence using morphometric or
geometric morphometric data in a similar way that the divergence dating
using molecular variants. For example, using evolutionary rates to obtain
relative dates of morphological divergence. I am interested in a
microevolutionary context.

Thanks in advance for any suggestion

Warm regards

Pablo

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[MORPHMET] Question on combining 3D data from microscribe and CT models

2016-08-24 Thread Pablo Fisichella
Dear morphometricians,

Currently I am performing a study on 3D human craniofacial morphology. I
have data derived from microscribe and from 3D models obtained from CT
scans and procesed in landmark Editor software. My question is if it is
possible to combine both kinds of 3D data within the same form/shape
analysis.  In addition, someone has used/processed 3D data derived from
microscribe  in the package Morpho for R?, is it possible? In the Morpho
User Guide are mentioned only formats derived from the programs for 3D
models (Meshlab, landmark, etc)

Thanks for any suggestion

Best,

Pablo

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[MORPHMET] Question on combine datasets in MorphoJ

2017-08-13 Thread Pablo Fisichella
Dear All

I am analyzing 3D coordinates from non-human primate molars. I have in the
same dataset coordinate data for M1, M2 y M3. I performed multivariate
analysis using the size and shape (form) of all teeth together (M1, M2 and
M3). Now I am interested in perform analysis comparing individual teeth, so
I used the option Subdivide Dataset by and I divided my dataset by tooth
class. Subsequently, in order to perform multivaraite analysis I used the
option combine data set and I combined my M1 data for all species in one
dataset. The same procedure was used for M2 and M3. Since I am interested
in the shape component I done a  multivariate regression of the procrustes
coordinates on the CS. I obtained  a new dataset free of the allometric
component. I followed the same procedure to subdivide the general dataset
into individual datasets representing each molar teeth. However, when I
tried to combine my shape dataset is not posible, simply the shape dataset
was not present in the datasets available to combine the datasets, only the
form datasets are available to make the combination. So I cant performed
statistical analysis by individual teeth using the residuals of the
multivariate regression (i.e.,shape).

Somebody have suggestions on how I can divide my dataset in indidivdual
teeth in order to perform statistical analyses? and why the combine dataset
option apparently doesnt work for my shape data?

any suggestion or advise is more than wellcome

best regards

Pablo

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Re: [MORPHMET] Question on Morpho

2017-07-14 Thread Pablo Fisichella
Dear Antonio

Excuse my delayed response. Thank you, your suggestion work quite fine, I
made the GPA. However, as Paolo mentioned the coords looks so strange. I
made .csv files from .pts files (in landmark). Here I attach one of my .csv
and the corresponding .pts file. There is a way to read multiple .txt files
from a folder similar to read.csv.folder?. which is the right format of the
data frame? I have 3D coordinates derived from Amira and microscribe.

Thank you

2017-07-13 5:30 GMT-03:00 Antonio Profico <antonio.prof...@uniroma1.it>:

> Dear Pablo,
>
> try:  proc <- ProcGPA(a$arr).
>
> The object "a" is a list, the array is an element (arr) of the list.
>
> Let me know if works,
>
> Antonio
>
> 2017-07-13 4:59 GMT+01:00 Pablo Fisichella <fisichellapa...@gmail.com>:
>
>> Dear All
>>
>> I am using the package Morpho in order to make some GM analyses but I
>> obtained some errors. Now I am trying to use the function read.csv.folder
>>
>> I ran this command
>>
>> a<-read.csv.folder("E:/Documents/Zan2", x = 2:44, y = 2:4, rownames =
>> NULL, header = TRUE, dec = ",", sep = ";", pattern = "csv", addSpec = NULL,
>> back = TRUE)
>>
>> In the r console appeared my 5 files .csv (see below) with 43
>> landmarks/semilandmark in 3 dimensions for 5 individuals (0093, 0137, 0377,
>> 1865, 1880)
>>
>> Then I tried perform a Procrustes Analysis using this function: proc <-
>> ProcGPA(a) however this error appear: Error in addo(a3) : please provide
>> 3D numeric array
>>
>> I feel that this error is related to my data array but I dont know how I
>> can solve this in order to run a GPA
>>
>> thanks in advance, I appreciate any help you can give me.
>>
>> cheers,
>>
>> Pablo
>>
>> $arr
>> , , 0093
>>
>>   X YZ
>> 1  3.30e+08 -1.08e+08 5.22e+08
>> 2  2.94e+08 -5.35e+07 5.12e+08
>> 3  2.76e+08 -7.79e+07 5.59e+08
>> 4  3.13e+08 -1.37e+08 5.48e+08
>> 5  3.21e+08 -1.35e+08 5.45e+08
>> 6  3.27e+08 -1.33e+08 5.42e+08
>> 7  3.32e+08 -1.30e+08 5.39e+08
>> 8  3.36e+08 -1.28e+08 5.36e+08
>> 9  3.38e+08 -1.25e+08 5.34e+08
>> 10 3.39e+08 -1.23e+08 5.32e+08
>> 11 3.39e+08 -1.20e+08 5.30e+08
>> 12 3.37e+08 -1.17e+08 5.29e+08
>> 13 3.33e+08 -1.14e+08 5.27e+08
>> 14 3.29e+08 -9.43e+07 5.21e+08
>> 15 3.30e+08 -9.20e+07 5.19e+08
>> 16 3.31e+08 -8.92e+07 5.17e+08
>> 17 3.31e+08 -8.59e+07 5.16e+08
>> 18 3.30e+08 -8.20e+07 5.15e+08
>> 19 3.28e+08 -7.77e+07 5.14e+08
>> 20 3.24e+08 -7.33e+07 5.13e+08
>> 21 3.19e+08 -6.86e+07 5.11e+08
>> 22 3.12e+08 -6.36e+07 5.10e+08
>> 23 3.04e+08 -5.84e+07 5.08e+08
>> 24 2.84e+08 -4.42e+07 5.20e+08
>> 25 2.81e+08 -4.40e+07 5.27e+08
>> 26 2.79e+08 -4.37e+07 5.32e+08
>> 27 2.78e+08 -4.28e+07 5.38e+08
>> 28 2.77e+08 -4.35e+07 5.43e+08
>> 29 2.76e+08 -4.60e+07 5.47e+08
>> 30 2.76e+08 -4.93e+07 5.50e+08
>> 31 2.75e+08 -5.34e+07 5.53e+08
>> 32 2.76e+08 -5.83e+07 5.55e+08
>> 33 2.76e+08 -6.43e+07 5.56e+08
>> 34 2.83e+08 -8.41e+07 5.67e+08
>> 35 2.85e+08 -8.59e+07 5.69e+08
>> 36 2.87e+08 -8.77e+07 5.70e+08
>> 37 2.89e+08 -8.99e+07 5.72e+08
>> 38 2.91e+08 -9.27e+07 5.73e+08
>> 39 2.93e+08 -9.67e+07 5.74e+08
>> 40 2.96e+08 -1.02e+08 5.74e+08
>> 41 2.97e+08 -1.09e+08 5.73e+08
>> 42 2.97e+08 -1.17e+08 5.69e+08
>> 43 2.96e+08 -1.26e+08 5.65e+08
>>
>> , , 0137
>>
>>   XYZ
>> 1  5.31e+08 5660 1.45e+08
>> 2  5.64e+08 -330 1.47e+08
>> 3  5.85e+08 2190 1.03e+08
>> 4  5.35e+08 7310 9.86e+07
>> 5  5.35e+08 7580 1.07e+08
>> 6  5.34e+08 7780 1.14e+08
>> 7  5.35e+08 7940 1.20e+08
>> 8  5.34e+08 7990 1.26e+08
>> 9  5.34e+08 7910 1.31e+08
>> 10 5.33e+08 7750 1.35e+08
>> 11 5.33e+08 7490 1.38e+08
>> 12 5.31e+08 7090 1.40e+08
>> 13 5.30e+08 6620 1.41e+08
>> 14 5.39e+08 5470 1.50e+08
>> 15 5.42e+08 5320 1.53e+08
>> 16 5.44e+08 5160 1.55e+08
>> 17 5.47e+08 4940 1.57e+08
>> 18 5.49e+08 4610 1.59e+08
>> 19 5.52e+08 4120 1.61e+08
>> 20 5.54e+08 3400 1.61e+08
>> 21 5.56e+08 2490 1.59e+08
>> 22 5.57e+08 1450 1.57e+08
>> 23 5.58e+08  291 1.54e+08
>> 24 5.77e+08 -654 1.40e+08
>> 25 5.82e+08 -335 1.34e+08
>> 26 5.88e+08   632000 1.31e+08
>> 27 5.92e+08  417 1.27e+08
>> 28 5.94e+08  687 1.23e+08
>> 29 5.95e+08  931 1.19e+08
>> 30 5.94e+08 

[MORPHMET] Question on Morpho

2017-07-12 Thread Pablo Fisichella
Dear All

I am using the package Morpho in order to make some GM analyses but I
obtained some errors. Now I am trying to use the function read.csv.folder

I ran this command

a<-read.csv.folder("E:/Documents/Zan2", x = 2:44, y = 2:4, rownames = NULL,
header = TRUE, dec = ",", sep = ";", pattern = "csv", addSpec = NULL, back
= TRUE)

In the r console appeared my 5 files .csv (see below) with 43
landmarks/semilandmark in 3 dimensions for 5 individuals (0093, 0137, 0377,
1865, 1880)

Then I tried perform a Procrustes Analysis using this function: proc <-
ProcGPA(a) however this error appear: Error in addo(a3) : please provide 3D
numeric array

I feel that this error is related to my data array but I dont know how I
can solve this in order to run a GPA

thanks in advance, I appreciate any help you can give me.

cheers,

Pablo

$arr
, , 0093

  X YZ
1  3.30e+08 -1.08e+08 5.22e+08
2  2.94e+08 -5.35e+07 5.12e+08
3  2.76e+08 -7.79e+07 5.59e+08
4  3.13e+08 -1.37e+08 5.48e+08
5  3.21e+08 -1.35e+08 5.45e+08
6  3.27e+08 -1.33e+08 5.42e+08
7  3.32e+08 -1.30e+08 5.39e+08
8  3.36e+08 -1.28e+08 5.36e+08
9  3.38e+08 -1.25e+08 5.34e+08
10 3.39e+08 -1.23e+08 5.32e+08
11 3.39e+08 -1.20e+08 5.30e+08
12 3.37e+08 -1.17e+08 5.29e+08
13 3.33e+08 -1.14e+08 5.27e+08
14 3.29e+08 -9.43e+07 5.21e+08
15 3.30e+08 -9.20e+07 5.19e+08
16 3.31e+08 -8.92e+07 5.17e+08
17 3.31e+08 -8.59e+07 5.16e+08
18 3.30e+08 -8.20e+07 5.15e+08
19 3.28e+08 -7.77e+07 5.14e+08
20 3.24e+08 -7.33e+07 5.13e+08
21 3.19e+08 -6.86e+07 5.11e+08
22 3.12e+08 -6.36e+07 5.10e+08
23 3.04e+08 -5.84e+07 5.08e+08
24 2.84e+08 -4.42e+07 5.20e+08
25 2.81e+08 -4.40e+07 5.27e+08
26 2.79e+08 -4.37e+07 5.32e+08
27 2.78e+08 -4.28e+07 5.38e+08
28 2.77e+08 -4.35e+07 5.43e+08
29 2.76e+08 -4.60e+07 5.47e+08
30 2.76e+08 -4.93e+07 5.50e+08
31 2.75e+08 -5.34e+07 5.53e+08
32 2.76e+08 -5.83e+07 5.55e+08
33 2.76e+08 -6.43e+07 5.56e+08
34 2.83e+08 -8.41e+07 5.67e+08
35 2.85e+08 -8.59e+07 5.69e+08
36 2.87e+08 -8.77e+07 5.70e+08
37 2.89e+08 -8.99e+07 5.72e+08
38 2.91e+08 -9.27e+07 5.73e+08
39 2.93e+08 -9.67e+07 5.74e+08
40 2.96e+08 -1.02e+08 5.74e+08
41 2.97e+08 -1.09e+08 5.73e+08
42 2.97e+08 -1.17e+08 5.69e+08
43 2.96e+08 -1.26e+08 5.65e+08

, , 0137

  XYZ
1  5.31e+08 5660 1.45e+08
2  5.64e+08 -330 1.47e+08
3  5.85e+08 2190 1.03e+08
4  5.35e+08 7310 9.86e+07
5  5.35e+08 7580 1.07e+08
6  5.34e+08 7780 1.14e+08
7  5.35e+08 7940 1.20e+08
8  5.34e+08 7990 1.26e+08
9  5.34e+08 7910 1.31e+08
10 5.33e+08 7750 1.35e+08
11 5.33e+08 7490 1.38e+08
12 5.31e+08 7090 1.40e+08
13 5.30e+08 6620 1.41e+08
14 5.39e+08 5470 1.50e+08
15 5.42e+08 5320 1.53e+08
16 5.44e+08 5160 1.55e+08
17 5.47e+08 4940 1.57e+08
18 5.49e+08 4610 1.59e+08
19 5.52e+08 4120 1.61e+08
20 5.54e+08 3400 1.61e+08
21 5.56e+08 2490 1.59e+08
22 5.57e+08 1450 1.57e+08
23 5.58e+08  291 1.54e+08
24 5.77e+08 -654 1.40e+08
25 5.82e+08 -335 1.34e+08
26 5.88e+08   632000 1.31e+08
27 5.92e+08  417 1.27e+08
28 5.94e+08  687 1.23e+08
29 5.95e+08  931 1.19e+08
30 5.94e+08 1150 1.16e+08
31 5.93e+08 1340 1.13e+08
32 5.92e+08 1530 1.11e+08
33 5.90e+08 1730 1.09e+08
34 5.85e+08 3280 9.65e+07
35 5.85e+08 3610 9.61e+07
36 5.84e+08 3930 9.58e+07
37 5.84e+08 4270 9.54e+07
38 5.83e+08 4650 9.45e+07
39 5.81e+08 5040 9.30e+07
40 5.76e+08 5420 9.10e+07
41 5.70e+08 5830 8.85e+07
42 5.62e+08 6080 8.60e+07
43 5.52e+08 6310 8.31e+07

, , 0377

  XYZ
1  5.48e+08 7410 1.08e+08
2  5.79e+08 1400 1.01e+08
3  6.04e+08 4710 5.61e+07
4  5.56e+08 9770 5.76e+07
5  5.57e+08 9850 6.97e+07
6  5.56e+08 9740 8.03e+07
7  5.55e+08 9630 8.91e+07
8  5.54e+08 9440 9.59e+07
9  5.52e+08 9190 1.01e+08
10 5.50e+08 8850 1.03e+08
11 5.49e+08 8580 1.04e+08
12 5.49e+08 8350 1.04e+08
13 5.49e+08 8060 1.04e+08
14 5.56e+08 6830 1.14e+08
15 5.58e+08 6600 1.16e+08
16 5.60e+08 6360 1.17e+08
17 5.63e+08 6120 1.19e+08
18 5.66e+08 5820 1.21e+08
19 5.69e+08 5410 1.22e+08
20 5.71e+08 4800 1.22e+08
21 5.72e+08 3960 1.20e+08
22 5.73e+08 2960 1.19e+08
23 5.71e+08 2000 1.13e+08
24 5.93e+08 1110 9.49e+07
25 5.99e+08 1380 9.20e+07
26 6.04e+08 1650 8.87e+07
27 6.08e+08 1930 8.54e+07
28 6.11e+08 2230 8.19e+07
29 6.13e+08 2530 7.83e+07
30 6.14e+08 2830 7.44e+07
31 6.13e+08 3140 7.05e+07
32 6.12e+08 3460 6.64e+07
33 6.10e+08 3810 6.21e+07
34 6.05e+08 5970 5.27e+07
35 6.05e+08 6390 5.30e+07
36 6.04e+08 6780 5.28e+07
37 6.02e+08 7150 5.25e+07
38 6.01e+08 7530 5.22e+07
39 5.99e+08 7930 5.19e+07
40 5.96e+08 8350 5.13e+07
41 5.91e+08 8720 4.98e+07
42 5.84e+08 8880 4.73e+07
43 5.77e+08 9030 4.48e+07

, , 1865

  X YZ
1  4.06e+08 -3.58e+08 5.56e+08
2  3.76e+08 -2.90e+08 5.60e+08
3  3.62e+08 

[MORPHMET] How to obtain measurements from 3D scans

2018-09-09 Thread Pablo Fisichella
Dear morphometricians

I am interested to obtain linear measurements from 3D models of human
fossil teeth. Given that I don’t have more access to the fossils now I am
planning to use the 3D length tool in Avizo to obtain the measurements that
I need. My question is if the measurements obtained from the 3D models are
a good proxy of those obtained directly from fossil teeth using a caliper
and if such 3D measurements can be actually used to perform statistical
analyses. In addition, I need to perform 2D geometric morphometric analyses
in some teeth (molars) where the use of 3D landmarks/semilandmarks is not
very useful. So, I want to know if there exists a way to obtain
standardized 2D pictures using Avizo or another software which can be used
to carry out 2D GM analyses.

Thank you so much for your help

All the best,

Paolo

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Re: [MORPHMET] Help with placePatch

2019-06-18 Thread Pablo Fisichella
Dear Murat and Ryan,



Thank you very much for your help. Both solutions work fine although the
Murat´s suggestions produced the following error but I was able to fix
it. Error
in dimnames(data)[[3]] = list(c(("A860ho, USNM083262hy, USNM084655pan,
USNM143590po, USNM143593po, USNM174699pan, USNM174701pan, USNM174702pan,
USNM239883go, USNM260582go"))) :   length of 'dimnames' [3] not equal to
array extent



I used these functions and worked correctly



dimnames(data)[[3]]=str_remove(dimnames(data)[[3]],".landmarkAscii")
patched.specimens <-
placePatch(atlas=atlas,dat.array=data,path="E:/Documents/hominoid",prefix
='', fileext=".ply")



the result and my checking of patched.specimens (Removed 0 duplicate 51977
unreferenced vertices and 0 duplicate faces) show that effectively the 60
semilandmarks were projected to all my specimens.



Now I´m trying to run the checkLM function as follows:



<-
placePatch(atlas=atlas,dat.array=data,path="E:/Documents/hominoid",prefix
='', fileext=".ply")  but I got this error: Error in vcgImport(filename,
clean = clean, readcolor = readcol) :  file E:/Documents/hominoidA860ho.ply
does not exist



It seems that again the function can´t find my .ply models so I used this
option:


checkLM(patched.specimens, path="E:/Documents/hominoid",prefix =
c(("A860ho, USNM083262hy, USNM084655pan, USNM143590po, USNM143593po,
USNM174699pan, USNM174701pan, USNM174702pan, USNM239883go, USNM260582go"),
suffix = ".ply", atlas=atlas))



but despite the RGL device is started and the r console is working
correctly the results are never returned.



Maybe you have some additional suggestions on how run the checkLM function
properly



Thank you very much for your help, I really appreciate your time and
expertise to answer my questions,


with thanks,



Pablo


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El lun., 17 jun. 2019 a las 17:02, Ryan Felice ()
escribió:

> Hi Pablo,
>
> A small change should fix it. Remove the “prefix” argument. Whatever you
> set “prefix” to is pasted in front of each specimen name. Notice how the
> error says there is no such file "E:/Documents/hominoid/A860ho,
> USNM083262hy, USNM084655pan, USNM143590po, USNM143593po, USNM174699pan,
> USNM174701pan, USNM174702pan, USNM239883go,
> USNM260582goA860ho.landmarkAscii.ply”.
>
> This is your path ("E:/Documents/hominoid/“), then your “prefix”, then
> the name of the first specimen in “data”, which is “A860ho.landmarkAscii”,
> then the file extension, “.ply".
> Try it like this:
>
> dimnames(data)[[3]]=str_remove(dimnames(data)[[3]],".landmarkAscii”)
>
> patched.specimens <-
> placePatch(atlas=atlas,dat.array=data,path="E:/Documents/hominoid",prefix
> ='', fileext=".ply"))
>
> If the dimnames(data)[[3]] perfectly match the filenames of your ply
> files (without the “.ply”), it should work.
> Best
> Ryan
>
>
> Ryan N. Felice, Ph.D
> Lecturer in Human Anatomy
> University College London
> Department of Cell and Developmental Biology
> Anatomy Building Room G23
> rnfelice.com
> ryanfel...@gmail.com
>
> On Jun 17, 2019, at 8:38 PM, Pablo Fisichella 
> wrote:
>
> Dear All,
>
> I’m using the function placePatch in Morpho to transfer semilandmarks from
> a template to all specimens in my sample (n=10). Unfortunately I have
> failed to run successfully such function. I have read some discussions here
> in the past but some solutions that apparently functioned for other persons
> do not seem to work in my case. Thus maybe somebody can help me with an
> idea or advice.
>
> I obtained my landmarks and semilandmarks using Amira
>
> I created an atlas (see attached pictures) which looks fine. I obtained 19
> landmarks and 60 semilandmarks for the template.
>
> I created a k x 3 x n array using the function read.amira.dir from the
> Arothron package (data=read.amira.dir("E:/Documents/landmarks","auto") my
> array is 19*3*10
>
> Finally I used the placePatch function as follows:
>
> placePatch(atlas=atlas,dat.array=data,path="E:/Documents/hominoid",prefix
> = c(("A860ho, USNM083262hy, USNM084655pan, USNM143590po, USNM143593po,
> USNM174699pan, USNM174701pan, USNM174702pan, USNM239883go, USNM260582go"),
> fileext=".ply"))
>
> I obtained a pxkxn array with only missing values -NAs- and I got 10
> errors like this for each one of my .ply models:
>
> In place.patch(dat.array, path, atlas.mesh = atlas$mesh,  ... :matching
&g

Re: [MORPHMET] Help with surface scans

2019-05-08 Thread Pablo Fisichella
Dear Ariadne

Thank you so much for your kind response and excuse my delayed reply. I´m
using an Artec Space Spide scanner. I´m doing some tests following several
of the guidelines here suggested. For lithic tools some reflecting surfaces
typical of some raw materials like chert produce some errors but is just a
matter of test. Thanks again for your advice.

All best,

Pablo

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El sáb., 27 abr. 2019 a las 11:56, Ariadne Schulz ()
escribió:

> I'm coming at this a bit late so I apologize if I've repeated anyone's
> point. For your purposes photogrammetry is probably your best option
> particularly for the lithics. Laser scanning works on bones and I used a
> NextEngine scanner for human proximal long bones, but I think someone has
> already mentioned that the laser doesn't capture the orbitals well and you
> might have difficulty with tooth enamel. The photogrammetry software
> requires a decently hefty laptop, but it's affordable and you'd be working
> with normal light rather than lasers. I don't know that this clears up your
> concerns about fusing scans though. If you are concerned you could do some
> error testing on that comparing landmarks obtained on the scans to
> landmarks obtained normally. I found the laser scans to be pretty decent,
> but I unfortunately cannot speak to photogrammetry as I've never personally
> tried it.
>
> On Mon, Apr 22, 2019 at 3:29 PM Pablo Fisichella <
> fisichellapa...@gmail.com> wrote:
>
>> Dear All
>>
>> I´m trying to obtain surface scans from human skulls and lithic artifacts
>> (projectile points). I wonder how can I get the most complete possible
>> scans, I mean usually is not possibly to obtain a complete scan at once. I
>> know that several post-scan processing software have functions to fuse
>> and/or align the different surfaces obtained and then create one surface
>> but perhaps several of you have some tips to obtain the most complete
>> possible surface scans.
>>
>> Any suggestion and advice is more than welcome
>>
>> All best,
>>
>> Pablo
>>
>> --
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>> ---
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>>
>

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Re: [MORPHMET] Help with surface scans

2019-04-25 Thread Pablo Fisichella
Dear All,

Thank you very much for all of your suggestions. I really appreciate your
advice. I´ll chek in detail all of your suggestions and I'll communicate
again if needed.

with kind regards,

Pablo

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El mié., 24 abr. 2019 a las 0:41, Murat Maga () escribió:

> Dear Pablo,
>
>
>
> It has been a while I worked with surface scanners. When I was using a
> Konica/Minolta system (15 years ago), we will do a rotational scan (using a
> turntable), at specified interval (say every 20-30 degrees of rotation).
> Then the software will stitch them together and then we would evaluate the
> missed regions in 3D rendering, then reposition the specimen accordingly
> and capture missing portions as individual snapshots and patch the 3D
> reconstruction. So essentially it was a trial and error process.
>
>
>
> I think the quality of and the speed of the reconstruction software have
> improved tremendously (almost to the point of real-time in some cases), but
> I believe process is essentially the same. Perhaps someone with more recent
> knowledge of this technology can chime in.
>
>
>
> M
>
>
>
> *From:* Pablo Fisichella 
> *Sent:* Monday, April 22, 2019 7:29 AM
> *To:* morphmet@morphometrics.org; morphmet_modera...@morphometrics.org
> *Subject:* [MORPHMET] Help with surface scans
>
>
>
> Dear All
>
> I´m trying to obtain surface scans from human skulls and lithic artifacts
> (projectile points). I wonder how can I get the most complete possible
> scans, I mean usually is not possibly to obtain a complete scan at once. I
> know that several post-scan processing software have functions to fuse
> and/or align the different surfaces obtained and then create one surface
> but perhaps several of you have some tips to obtain the most complete
> possible surface scans.
>
> Any suggestion and advice is more than welcome
>
> All best,
>
> Pablo
>
> --
> MORPHMET may be accessed via its webpage at http://www.morphometrics.org
> ---
> You received this message because you are subscribed to the Google Groups
> "MORPHMET" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to morphmet+unsubscr...@morphometrics.org.
>

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[MORPHMET] Help with surface scans

2019-04-22 Thread Pablo Fisichella
Dear All

I´m trying to obtain surface scans from human skulls and lithic artifacts
(projectile points). I wonder how can I get the most complete possible
scans, I mean usually is not possibly to obtain a complete scan at once. I
know that several post-scan processing software have functions to fuse
and/or align the different surfaces obtained and then create one surface
but perhaps several of you have some tips to obtain the most complete
possible surface scans.

Any suggestion and advice is more than welcome

All best,

Pablo

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