PLEASE NOTE ALL: In this video I say there is a problem setting colours and symbols. There is NOT. I was confused. Apologies to all, especially the authors of this excellent app.
@oyviham
9 жыл бұрын
Hi, thanks for your nice videos! Setting colors and symbols depending on group works fine at my end. Can you let me know what the trouble is so I can have a look? (I'm the Past author).
@kamcgnt
9 жыл бұрын
+Øyvind Hammer Thank you! Thank you and your colleague for making PAST! I have access to PRIMER/PERMANOVA+ but PAST is great for students and researchers on a limited budget. I was having trouble with the change from PAST 2 to 3, where the way you have some things working has changed. So -- and I will put this in caps -- IT WAS MY PROBLEM; PAST 3 is fine. Also, not comment from Lina Silva. I will add a comment to make this clear.
@marfisilva
9 жыл бұрын
Hi Mr. McGuinness, thank you very much for your videos! I have something to add. There is no need to go through PAST v2 to assign colours and symbols to numbered groups. You can put that information in columns of your Excel sheet and paste that information directly to the PAST v3 columns with row and column attributes activated. Just make sure the columns in the Excel sheet are in the same order as in the PAST v3 sheet and that the colour and symbol names are the same as the ones displayed in the PAST v3 options. Please let me know if this works for you too. Thank you again!
@kamcgnt
9 жыл бұрын
+Lina Silva Hi Lina. Thanks! That's a great tip.
@qasimahmad6714
3 жыл бұрын
Please i just need one comment from you.....It would be highly appreciated.. Question is does PAST only can do with five variables...... I am trying to put 14 variables for two groups with thier 3 replications but PAST is showing only 5 variable in Summary. However, in loading and biplott all variables are showing..... i can not understand why it is so? or how to adjust this?
@jesterjester1626
2 жыл бұрын
Did you input data that are not standardized? If so, moving on to the next question, when conducting PCA, will the data be automatically standardized. Thank you for your answers.
@kamcgnt
2 жыл бұрын
I am retired with no access to data or software. Very sorry. But I (if I am remembering correctly) do have a video on "preliminary" treatment of the data which discusses this.
@aruntram
2 жыл бұрын
Thank you so much sir for your great information. Could you please mention how to find PCA for seasonal parameters of more than 8 samples
@kamcgnt
2 жыл бұрын
Retired; no access to software and not answering questions. Apologies.
@jeganmicro1
4 жыл бұрын
Its nice video. Can you post video how to load a biological replicate values and perform significant analysis using PAST. It will be helpful for many biologist.
@kamcgnt
4 жыл бұрын
Retired.
@gonzalosotomayor4914
6 жыл бұрын
Thanks for this great video. I have a coment and some questions for you. In PAST we can do a PCA with a specific option namely "between-group" where the eigenanalysis is carried out on the group means (i.e. the items analysed are the groups, not the rows) (Hammer, 2012). Thereby, ¿you have a scrip (for PAST or other software) to contruct this kind of PCA? ¿you have any bibliographic reference for this "between-group" PCA? Best regards
@kamcgnt
6 жыл бұрын
I do not know how the group option works in PCA.
@268random
7 жыл бұрын
Hi, Cheers for the videos, super helpful. I am struggling with the Convex Hulls, I have a very similar data set to yours, site with variables. even after grouping each site, the convex hulls remains only one large group around all data. Any ideas on how PAST knows to recognise the different sites, such as in your example?
@kamcgnt
7 жыл бұрын
PAST works on the data selected, so the selection must include the site grouping variable; it should be the first variable/column in the selection. Also, it must be designated as a 'Group' variable. To do this, turn on column attributes and change 'Type' to 'Group'. You also need to set colours and symbols for the rows to see these in the graph.
@268random
7 жыл бұрын
Hi Keith, fantastic thats worked a treat! thanks for your help and keep up the good work!
@nuningugm
8 жыл бұрын
I have a question how can we do cross validation of our PCA using PAST? thank you so much
@kamcgnt
8 жыл бұрын
+tri rini nuringtyas I'm sorry, I don't know how to do that in PAST.
@margaritalopez9741
9 жыл бұрын
I can't enter my data to the version 3.09 :( help please!!!!
@kamcgnt
9 жыл бұрын
+Margarita López See new video just up. kzitem.info/news/bejne/1Z2g2XZ-r6Cjfm0
@lucyeckersley1234
7 жыл бұрын
Hello, thank you very much for the video, it has really helped me analyse my data. I wonder if you know how to do cluster analysis of the newly created PC's?
@kamcgnt
7 жыл бұрын
Sorry, no: not with PAST.
@qasimahmad6714
3 жыл бұрын
Please i just need one comment from you.....It would be highly appreciated.. Question is does PAST only can do with five variables...... I am trying to put 14 variables for two groups with thier 3 replications but PAST is showing only 5 variable in Summary. However, in loading and biplott all variables are showing..... i can not understand why it is so? or how to adjust this?
@dr.s.g.ghaneasstt.professo7419
7 жыл бұрын
Kindly upload the video with 3.16
@kamcgnt
7 жыл бұрын
Sorry, do not have time to do a new video every time PAST is updated.
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