I would like to concatenate multiple regionprops tables together that are generated one by one in a loop. However, I was not sure how to initialize the first table. What I did was create a table of zeros and assign all of the variable names. The error I am getting however is "Dimensions of arrays being concatenated are not consistent." Both tables are 1 by 33, but the error comes in from the centroid entry, for example. The centroid in regionprops has two entries, the x and y value, but the table I initialized only has one entry under centroids. How can I initialize the table such that the variable Centroid is assigned two entries? If that is not possible, is there a better way to go about concatenating regionprops tables that are generated in loop?