[R] convert an image to matrix, color frequencies

Dear R-users, In advance excuse me for this basic question. I´m trying to compare the coloration patterns on three spider species. In order to do that, I was trying to convert the image on a pixel matrix and compare them. Because of that, I´d like to know how to convert an image to a pixel

[R] Consulta sobre GLM-log linear

Estimados amigos, Estoy familiarizándome con los modelos lineales generalizados en R. Estoy interesado en realizar un análisis lig linear y me gustaría saber cuáles son o como extraer los valores correspondientes al chi cuadrado en el análisis para cada grupo y para las interacciones. Desde ya

[R] Chi square 1 d.f.

Dear Fellows, I am trying to find the exact p-value for some values using chisquare test with one d.f. So, for example the exact p-value for a calculated chi square of 14.62 would be 0,0038. I got this data on another software but I would like to know how to do it on R. Any advice will be really

[R] ANOVA Estimated effects may be unbalanced

Dear All, This is a data relating leg shaking on differenntre treatments. I reused several individuals so I want to know 1) if there are significative differences on shaking per treatment and 2) if the reused individuals presented some effect or significative variation. Nevertehless when I make

[R] GLMM in R

Dear Friends, I am new on R so I ask you to excuse me if this question sounds fool. I want to see if there is a significativa relationship between the mating (response variable) and several explanatory variables such as individual number (categorical), leg movemente (continous) and the reuse of

[R] curve comparison

Dear R users, I have seven regression lines I´d like to compare, in order to find out if these are significatively different. The main problem is that these are curves, non normal, non homogeneous data, I´ve tried to linearize them but it has not worked. So I´d like to know if you know any

[R] Ad Hoc comparison non parametric ANCOVA

Dear R Users, Recently I began to use R. I`m interested about comparing several regression curves. REcently I found the package sm and the function sm.ancova which I understand allows me to do this. I applied this function to my data (seven regression curves) and I found that there are

[R] Ad Hoc comparison non parametric ANCOVA

Dear R Users, Recently I began to use R. I`m interested about comparing several regression curves. I found the package sm and the function sm.ancova which I understand allows me to do this. I applied this function to my data (seven regression curves) and I found that there are significant