Tuesday, 9 June 2020

QGIS vs ARCGIS The gap is closing...

I've been messing around with the 'gtrendsR' package to see how the big two 'GIS' packages are squaring up on google searches. It shows a slow but steady improvement for 'QGIS' but a 'spike' in 'ArcGIS' too in early 2020. Will try to get some more detailed 'monthly' analysis asap.

Updated: 14:56 pm Tue 9th June 2020

RStudio code:-

# You only need to change "QGIS" and "ARCGIS" to alternative google 'keywords'
# Assign 'QGIS' and 'ARCGIS' to 'res'
res <- gtrends(c("QGIS", "ARCGIS"))
# Assign 'res$interest_over_time' to 'iot'
iot <- res$interest_over_time
# Assign 'iot (and then) filter date' to 'iot2020'
iot2020 <- iot %>%
  filter(date > as.Date("2015-01-01"))
# Assign 'iot2020' to 'ggplot'
iot2020 %>%
  ggplot() + geom_line(aes(x = date,
                           y = hits,
                           color = keyword)) +
  theme_minimal() +
  labs(title = "QGIS vs ARGIS 2015-2020",
       subtitle = "Google Trends Report",
       caption = "Courtesy: gtrendsR package")


This looks an interesting concept. I still use both a Nexus 4 and 5 for simplicity.


Find out more:-


Thursday, 21 May 2020

Looking for a single board low cost 'travel' laptop for everyday web surfing?

I was looking for a raspberry pi laptop, the idea that you can have a single board computer with every component inside screwed down and thus being upgradable in the future,  I might for example upgrade the pi with a newer board or with add-on modules for different functionality such as a bigger 'SSD' but all I could find was this type of thing... not exactly what I had in mind.

The 'PiTop'

I started to 'google' around the subject and to think about other scenarios, what if I could have a single board mobile phone that I can install any linux operating system onto then connect peripherals via bluetooth or a tablet that can boot from a microSDHC card and be rid of 'Google' spyware
and a laptop that looks like a laptop with decent battery life, runs Ubuntu, and costs little more than an M+S multi-packet of crisps.

Well... I found all I need with 'Pine64.org' that is a very very interesting prospect because I believe that technology should not only be 'open' and community driven but low cost and where i'm not stuck in a 'Google' or 'Apple' proprietary throw away ecosystem bombarded with alerts every 2 minutes. the interesting component are the hardware boards (very similar) to the raspberry pi but have gone a little further.

Some people will say "but I can get all of this on my iphone" but to have a choice of  'form factor' is a major selling point here and that is where it becomes interesting when you look through the online store.

For less than £450 you can own a 'pinephone' a 'pinetab' and a 'pinebook pro', yes...unbelievable value! The organisation actually produce all it's own main boards in the US such as the 'Allwinner A64 Quad Core SOC with Mali 400 MP2 GPU' and the 'Allwinner A64 Quad Core SOC with Mali 400 MP2 GPU' (assembled in Hong Kong) as shown below.

'Allwinner A64 Quad Core SOC'

'Pinephone' remember the price for the specs!.


'Pinebook Pro'.
Both 'Pinephone' and 'Pinetab' booting from microSDHC cards into 'Manjaro' linux.

As with anything there are some downsides. If your a gamer, a Microsoft devotee, you can forget these fairly low powered devices... but for those who want choice, security and independence and be able to change the battery and are not too 'brand precious' you may want to give these guys a serious look the build quality 'v' price is excellent. Will let you know my verdict soon.

Friday, 13 March 2020

Covid-19 Interactive Map (daily updates)

The departement of Public Health of the Strasbourg University Hospital (GMRC, Prof. Meyer) and the Laboratory of Biostatistics and Medical Informatics of the Strasbourg  Medicine Faculty (Prof. Sauleau), to the extent of their means and expertise, are contributing to the fight against Covid-19 infection. Doctor Fabacher has produced an interactive map for global monitoring of the infection, accessible at :


This map, which complements the Johns Hopkins University tool (Coronavirus COVID-19 Global Cases by Johns Hopkins CSSE), focuses on the evolution of the number of cases per country and for a given period, but in terms of incidence and prevalence. It is updated daily.
The period of interest can be defined by the user and it is possible to choose  :
  • The count of new cases over a period of time or the same count in relation to the population of the country (incidence).
  • The total case count over a period of time or the same count reported to the population (prevalence).
This map is made using R with shiny, leaflet and dplyr packages.

Code available here:-


Wednesday, 11 December 2019

rollApp rollApp...

Ever get fed up with installing software then upgrading every so often? 'rollApp' is another example of 'SaaS' but larger government departments and companies may find the cost of doing this work often more than the cost of the pricing polices of running the software in the 'cloud'. In the UK this amounts to £71.88 or £5.32 a month (at time of writing) for individual accounts. There is a discount if your on the 'premium for groups' level which is £471.59 a month for 100 users.

A quick search on the apps reveals that there appear to be all of the FOSS applications you would need including spatial and mapping (sadly...no 'RStudio'). I've tried the 'free' tier and the performance is very good and usable as long you don't 'save' anything to local disk or cloud. Worth a try even just for the convenience of being able to use your applications on any device!

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Qgis-server...Installing the QGIS Lizmap Plugin & Lizmap Web Client

This post follows on from my previous three (most recent first in list) linked below. There is no doubt that in just a short time from no...