Blog

Hi, I would like to create both individual posts (which are essentially articles) and category posts (which get listed like posts, but have posts under them as well). The idea is the following: a travel blog with posts within posts. Some posts are entire trips (with multiple posts under them), others are just single articles.Read more

This is a nested if loop I wrote in google spreadsheets Whenever I enter a value for B5 between 0 and 1 like 0.5, it says there is “no match”. I think there is something wrong with the last section of the code. I was wondering if anyone knew how to fix this? Thank youRead more

I have a function which takes a list as its argument, and I want to transform it by multiplying by a matrix for each element of a list. To be specific, I want the following transformation: $ $ \hat{f}_i = \sum_p^n A_{ip}f_p, \quad \hat{f}_{ij} =\sum_i^n \sum_j^n A_{ip}A_{jq} f_{pq}, \quad \hat{f}_{ijk} =\sum_i^n \sum_j^n \sum_k^n A_{ip} A_{jq}Read more

I work with Mathematica 7. I have a list of lists, e.g.: l = { {{1,2}}, {{1,2},{2,3}} }. What is the Mathematica command to get the sequence (not the list) of members of a nested list? The result for my example: {{1,2}}, {{1,2},{2,3}}. What is the Mathematica command to map a Mathematica command to theRead more

I intend to turn a large hollow wooden sphere on a lathe. To do this, I need to construct a roughly spherical hollow wooden blank. An icosadodecahedron seems like a good choice, as it is pretty close to spherical and would be an easy solid to construct. (All edges are the same length and haveRead more

Consider a list as list = Table[{{i, j}, {k, l}}, {i, 1, 2, 1}, {j, 1, 2, 1}, {k, 1, 2, 1}, {l, 1, 2, 1}]; The outcome of this is: {{{{{{1, 1}, {1, 1}}, {{1, 1}, {1, 2}}}, {{{1, 1}, {2, 1}}, {{1, 1}, {2, 2}}}}, {{{{1, 2}, {1, 1}}, {{1, 2}, {1, 2}}},Read more

Assume that you have the following 3 entities: Manual Version Document 1 Manual has multiple versions and 1 version has multiple Documents. I want to build a Web API that allows customers to insert their manuals, versions and documents, but what is the best practice? Do I accept the posted data object in a nestedRead more

I have a coordinate system generated by : coord = Table[{x, y}, {x, 5}, {y, 5}] I would like to calculate ArcTan(y/x) and apply to coord: ArcTan[#2/#1] & /@ coord I am not sure what’s wrong with my function. Could you help me to fix it? Thanks!Read more

Context I have three custom node types (Batch, Item, Order) that I use to track orders (I don’t need the power of full-blown Commerce). These are linked through the following entity reference fields: Batch->Item through field_items on Batch Order->Item through field_items on Order I have a table view set up which shows Items by Batch.Read more

the following code works properly for(i=0; i<10; i++) { } for(i=0; i<100; i++) { } while the same principle does not work for nested loops for(i=0; i<10; i++) { for(i=0; i<100; i++) { } } what is the reason behind it?Read more